Brand of gas / driving style? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-13-2013, 06:58 PM   #1
Jeeper
 
Scott2373's Avatar
 
Join Date: Mar 2013
Location: Williamson, NY
Posts: 1,186
Brand of gas / driving style?

My previous vehicle, a 2003 Liberty Renegade had the 3.7L V6 in it and I quickly realized that this engine loved to be "abused". Ran hard and fast and ran it's best on the cheapest American gas I could find (Kwik Fill in my neck of the woods) and subsequently got the best mileage on the cheap stuff as well. Being an American motor, I figured they tuned it with American gas, but this is purely speculation. I'm wondering if anyone noticed that a particular brand of gas gets better mileage/performance with the 3.6L. I kinda figured that being a European designed power plant, it might run better on, say, Mobil which is obviously an international brand. I'm very hesitant to buy Mobil gas because it is easily $.10 cents more/gallon, and I doubt the savings in mileage would add up to the extra I'd be spending at the pump. Thoughts?

__________________
2013 Sport in Commando Green
3.73 Gears, A/C, 6-Speed
/_|o[___]o
[I---L-OllllllO
-
()_)()_)=°°=)_)
MOLON LABE
Scott2373 is offline   Quote Quick Reply
Old 06-13-2013, 07:10 PM   #2
Jeeper
 
dawhitesJKU's Avatar
 
Join Date: Jul 2012
Location: SoCal 714/562
Posts: 3,362
Send a message via Yahoo to dawhitesJKU
i use chevron or mobil due to the fact that the locations are very convenient for me.
I fill up using 87 and once every other month, i switch to 91. i get the same gas mileage using either chevron or mobil but when i switch to 91, the engine seems to love it.

dawhitesJKU is offline   Quote Quick Reply
Old 06-13-2013, 07:16 PM   #3
Jeeper
 
Scott2373's Avatar
 
Join Date: Mar 2013
Location: Williamson, NY
Posts: 1,186
What kind of mileage are you seeing? Currently I'm averaging 19mpg with the Kwik Fill and a little less with Sunoco. We don't have Chevron in NY, or I would use it. Their gas is very high quality. I won't run the 91 though, since the manufacturer specifies 89. I did what you are now with my old '99 Dodge Ram, which I bought new, and it developed a nasty case of pre-ignition after several years, which more than one experienced "car guy" I spoke with attributed to running the higher octane fuel. Rather than fixing it, I traded it, since it was paid for :-D
__________________
2013 Sport in Commando Green
3.73 Gears, A/C, 6-Speed
/_|o[___]o
[I---L-OllllllO
-
()_)()_)=°°=)_)
MOLON LABE
Scott2373 is offline   Quote Quick Reply
Old 06-13-2013, 07:24 PM   #4
Jeeper
 
jt12's Avatar
 
Join Date: Feb 2013
Location: Boston, MA
Posts: 38
Quote:
Originally Posted by Scott2373 View Post
What kind of mileage are you seeing? Currently I'm averaging 19mpg with the Kwik Fill and a little less with Sunoco. We don't have Chevron in NY, or I would use it. Their gas is very high quality. I won't run the 91 though, since the manufacturer specifies 89. I did what you are now with my old '99 Dodge Ram, which I bought new, and it developed a nasty case of pre-ignition after several years, which more than one experienced "car guy" I spoke with attributed to running the higher octane fuel. Rather than fixing it, I traded it, since it was paid for :-D
I've with 89 from whatever company, regardless of what I'm doing. Haven't tried comparing and contrasting, but interested in hearing from people that have and whether they've noticed anything significant.
jt12 is offline   Quote Quick Reply
Old 06-13-2013, 07:44 PM   #5
Jeeper
 
dawhitesJKU's Avatar
 
Join Date: Jul 2012
Location: SoCal 714/562
Posts: 3,362
Send a message via Yahoo to dawhitesJKU
im getting high 19's low 20's on my 2012 6spd 3.21 gears and 285/70/17's
dawhitesJKU is offline   Quote Quick Reply
Old 06-13-2013, 07:48 PM   #6
Jeeper
 
Join Date: May 2013
Location: Virginia
Posts: 165
Is there really any difference in brands of gas these days? I have a friend who owns two stop in stores. He has changed "brands" of gas a couple of times over the years and said it all comes from the same storage tanks in the same delivery trucks. There is a huge storage facility about 50 miles from here and evidently all of the gas in our area comes from the same facility which is owned by Marathon. So is brand name gas just a scam or does it depend on where you live?
Martin10 is offline   Quote Quick Reply
Old 06-13-2013, 07:51 PM   #7
Jeeper
 
n00g7's Avatar
 
Join Date: Apr 2013
Location: Northern VT // Western Wisconsin
Posts: 1,995
Chevron has the best gas. Period. Texaco also uses Chevron detergents. This is followed by Shell and other top-tier stations.

I'll alternate between Chevron and Costco gas in the Jeep. BMW sees only Chevron.
__________________
That moment when you look at a really nice JK and think to yourself, "Well I SUPPOSE I could see myself trading in my TJ for one of those, but for those ugly ass door handles."
n00g7 is offline   Quote Quick Reply
Old 06-13-2013, 07:53 PM   #8
Jeeper
 
n00g7's Avatar
 
Join Date: Apr 2013
Location: Northern VT // Western Wisconsin
Posts: 1,995
Quote:
Originally Posted by Martin10 View Post
Is there really any difference in brands of gas these days? I have a friend who owns two stop in stores. He has changed "brands" of gas a couple of times over the years and said it all comes from the same storage tanks in the same delivery trucks. There is a huge storage facility about 50 miles from here and evidently all of the gas in our area comes from the same facility which is owned by Marathon. So is brand name gas just a scam or does it depend on where you live?
Depends, no-name gas stations may receive gas meeting tier 1 standards, or they may not. You do not necessarily "know" unless it comes from (1) a particular refinery (e.g., Chevron) and (2) that refinery uses the same mix for all deliveries.
__________________
That moment when you look at a really nice JK and think to yourself, "Well I SUPPOSE I could see myself trading in my TJ for one of those, but for those ugly ass door handles."
n00g7 is offline   Quote Quick Reply
Old 06-13-2013, 07:55 PM   #9
Jeeper
 
n00g7's Avatar
 
Join Date: Apr 2013
Location: Northern VT // Western Wisconsin
Posts: 1,995
I've gotten bad gas enough times driving cross country that I don't screw around with non name-brand gas stations.
__________________
That moment when you look at a really nice JK and think to yourself, "Well I SUPPOSE I could see myself trading in my TJ for one of those, but for those ugly ass door handles."
n00g7 is offline   Quote Quick Reply
Old 06-13-2013, 08:05 PM   #10
Jeeper
 
yacc's Avatar
 
Join Date: Nov 2012
Posts: 222
My wrangler gets treated just like my trucks always have, cheapest 87 octane I can find. Generally QT or Racetrac. Never noticed any difference in any of it.
__________________
http://www.headtohead.us
yacc is offline   Quote Quick Reply
Old 06-13-2013, 09:03 PM   #11
Jeeper
 
tab22092's Avatar
 
Join Date: Apr 2013
Posts: 1,564
I use 89. Remember that our rigs require 87 octane. So you may be saying to yourself why not just regular then? If you look at the buttons you press they will have +/- 2 method. So in actuality 87 could be 85, causing some well known problems with the 3.6 such as pinging and detonation. With 89 will always at least be 87. Our compression ratio is right on the brink of 87's top end, its quite high for regular. So there ya go! Lol 89! .
__________________
2013 jk 6spd - 18/59 coils - PS BFH Trail Stinger - Teraflex Hinge and Carrier - Yukon 4.56 gears - Teraflex c gussets - Teraflex front axle sleeves - Alloy USA Ball Joints - Banks Monster Exhaust - JKS Quick Discos - Pro-Comp 7069's - Fierce Attitude 35's - MORE Oil Pan/Trans Skid - PS Bombshell Diff Covers - Rancho 7000 MT's
tab22092 is offline   Quote Quick Reply
Old 06-13-2013, 09:15 PM   #12
THW
Jeeper
 
THW's Avatar
 
Join Date: Jun 2012
Location: Litchfield Hills area, Connecticut
Posts: 780
I grew up riding in gasoline delivery trucks as a kid- I worked the hoses at delivery. We'd fill up at the terminal (those gigantic building-sized tanks you see near the highway on a coast) and deliver to multiple different brands of stations sometimes even from a single tankful of a particular octane. Never heard of "American gas"- we delivered the same gas to Citgo stations (Venezuelan corporation) as to Texaco (Texas-based). For some stations you mix in additives after delivery but my understanding was that was basically marketing hocus pocus. Rule of thumb is basically that gas is gas is gas (different octanes obviously make a difference though).
__________________
2013 Sport S Unlimited, Black
THW is offline   Quote Quick Reply
Old 06-14-2013, 12:22 AM   #13
Jeeper
 
n00g7's Avatar
 
Join Date: Apr 2013
Location: Northern VT // Western Wisconsin
Posts: 1,995
Quote:
Originally Posted by THW View Post
I grew up riding in gasoline delivery trucks as a kid- I worked the hoses at delivery. We'd fill up at the terminal (those gigantic building-sized tanks you see near the highway on a coast) and deliver to multiple different brands of stations sometimes even from a single tankful of a particular octane. Never heard of "American gas"- we delivered the same gas to Citgo stations (Venezuelan corporation) as to Texaco (Texas-based). For some stations you mix in additives after delivery but my understanding was that was basically marketing hocus pocus. Rule of thumb is basically that gas is gas is gas (different octanes obviously make a difference though).
This is what makes the difference. THEY WORK.
__________________
That moment when you look at a really nice JK and think to yourself, "Well I SUPPOSE I could see myself trading in my TJ for one of those, but for those ugly ass door handles."
n00g7 is offline   Quote Quick Reply
Old 06-14-2013, 12:33 AM   #14
Jeeper
 
Hancock10's Avatar
 
Join Date: Nov 2012
Location: Washington
Posts: 116
Arco (AmPm) is the cheapest around here...and my jeep flies thru it being my daily driver. I switched to chevron and noticed it lasted me about 1 to 1 1-2 days more. Or about 20-30 miles
Hancock10 is offline   Quote Quick Reply
Old 06-14-2013, 03:43 AM   #15
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
My shade tree study

OK .. I just found this thread and thought this would be a good place to document my findings.

My 2013 10A fuel mileage started at 14.8/15 MPG when I drove off the lot ... it currently has ~700 miles. This was combination city/hwy ... mostly city miles with one oil change at 500 miles. The dealer poured 0w20 per the RO .. tires inflated to 42 psi.

The issue I've experienced is the gas mileage dropped to 13.8 average as stated on the EVIC. This started right before the oil change. I'm not one to track or care about MPG because I'm not wired that way - what I do care about is tuning and performance to assure the engine is happy.

So I decided to switch from Chevron 89 to 91 octane fuel and I immediately gained an average 0.5 MPG. The motor is hovering right around 14.2 MPG now and I still have 3/4 tank to burn through.

This 3.6L motor runs better on 91 octane gas .. and it shows in the fuel mileage.


.02

.
__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Old 06-14-2013, 03:51 AM   #16
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
Quote:
Originally Posted by n00g7 View Post
Chevron has the best gas. Period. Texaco also uses Chevron detergents. This is followed by Shell and other top-tier stations.

I'll alternate between Chevron and Costco gas in the Jeep. BMW sees only Chevron.
That's because you work at Chevron? Bay Area? ... LOL

My cousin and his wife has worked at Chevron headquarters for over 30 years.

I buy Chevron now because Techron really works.. I can prove it.




.
__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Old 06-14-2013, 04:34 AM   #17
Jeeper
 
n00g7's Avatar
 
Join Date: Apr 2013
Location: Northern VT // Western Wisconsin
Posts: 1,995
Quote:
Originally Posted by m998dna View Post
That's because you work at Chevron? Bay Area? ... LOL

My cousin and his wife has worked at Chevron headquarters for over 30 years.

I buy Chevron now because Techron really works.. I can prove it.




.
I do not work for Chevron. Top Tier Gasoline Chevron just happens to exceed the manufacturer's expectations. It's why many truck it in/utilize their detergent for vehicle testing.

It's similar to a dino vs synthetic issue. If you plan to run the vehicle until it dies, put in the better shit. If plan on ditching it, you don't care.
__________________
That moment when you look at a really nice JK and think to yourself, "Well I SUPPOSE I could see myself trading in my TJ for one of those, but for those ugly ass door handles."
n00g7 is offline   Quote Quick Reply
Old 06-14-2013, 06:24 AM   #18
Jeeper
 
12thman's Avatar
 
Join Date: Sep 2012
Posts: 252
Every few weeks this comes up on this forum.*I work in an oil refinery. As far as using anything in your Jeep other than what the owner's manual calls for, that's foolish. I will let you in on some secrets. Most of the nation's refineries are on the coasts. Gas stations close to those refineries get their gas at the refineries. Stations that don't have their own refinery nearby buy it from one that is local. If you move inland, the trucks pick up from terminals where we all ship gasoline to them via pipeline and it all gets mixed together in the tanks. The only thing you are getting different from another station is the additive. There isn't a requirement for how much additive, either. It can be one drop per tanker. Also be aware that just because it says one name on the sign, it's not necessarily that station. I work for an independant refiner, meaning we don't drill. We own hundreds of Shell stations in the Bay Area. Not one of them is actually Shell and if you look at the very fine print you will see it says, "operated by xxxxxx". You might also notice that none of the fuels say Shell with V-Power-their additive. To make it even more confusing, at my refinery, we have a Chevron terminal where their trucks come in and pick up fuel to take to their stations. On top of that, we all buy fuel from each other during maintenance shutdowns to fulfill our contracts. Ultimately, buy the cheapest gas at the recommended octane and if you want Techron, go buy it in the bottle at the auto parts store. It will still be cheaper.
12thman is offline   Quote Quick Reply
Old 06-14-2013, 06:26 AM   #19
Jeeper
 
00tj2's Avatar
 
Join Date: Aug 2011
Location: Westchester, NY
Posts: 1,285
Figured I'd join in on this one. First off to the OP, the 3.7 was a Mercedes design.

As for the fuel issue. Most top tier companies only add their special detergents or additives to their high test gas, as in 91 or 93, depending on what area you are in and what brand it is. Regular and mid grade fuel is cheap and can come from many different locals. It's the premium, or high test fuel that is the special one. Unless things have greatly changed in the 6 years that my family sold our 56 year, family owned gas station?? Btw we sold amoco gas and then later BP. Got our deliveries from a jobber and the only amoco specific fuel was the 93.
__________________
I know a lot of things, most of them are only correct in my own head...
Better to be judged by twelve then carried by six. I'm sure this is going to get me in trouble down the line
2000 sport, 5speed, 1-1/4 body lift, 3" zone, metal cloak front fenders, metal cloak control arms, 4.88, 35" cooper stt.
00tj2 is offline   Quote Quick Reply
Old 06-14-2013, 06:31 AM   #20
Jeeper
 
warbird24's Avatar
 
Join Date: Jun 2012
Location: Rochester, NY
Posts: 312
Images: 3
Technically in Upstate NY there are NO Top Tier Gas Stations. The other issue is State Mandated Ethanol Use of a minimum of 10%, this is a political thing to justify the Huge new Ethanol Processing plant in Medina NY.

My 12 JK was getting on about 17.5 to 18.5 MPG on pump gas with Ethanol. I found out that a few retailer were selling 91 Octane with no Ethanol and decided to give it a try. I have two tanks through my JK and my fuel mpg had gone up to 19.0-19.5 MPG. It is a un-scientific experiment but it looks like it is working.

One reason that this is working is Ethanol blended fuels have LESS BTU's than full unleaded fuels. While the Octane remains the same, BTU's are the actual working dynamic of making power.

I've worked delivering fuels for a number of years and I now work at an Auto Parts Store. I'll tell you that the number of fuel pumps we sell has exploded over the past 3-4 years, and most of that is due to Ethanol problems and lack of lubrication of the pumps.

Going this route may cost me a few pennies a week when I fill up, but I think for the care and feeding of my JK, I'll bank on that.
warbird24 is offline   Quote Quick Reply
Old 06-14-2013, 06:54 AM   #21
Jeeper
 
mcgee10's Avatar
 
Join Date: Jun 2012
Location: West Michigan
Posts: 824
Any brand that is 100% gasoline 0% ethanol. Ethanol makes all brands of gasoline take on water. All mileage figures are based on 100% gasoline. But most stations today are at least 10% ethanol.
Here is a link for some stations in your State that sell gas without ethanol. My boat and snowmobile will not run gas with ethanol in it, and my jeep gets 3-4 more mpg with non-ethanol gas.
Link---http://pure-gas.org/
__________________
2012 Sport Auto 3.73
ACE rock sliders
Eaton Tru-trac Front and rear
17 inch ATX Ledge wheels
285/70/17 Duratrac
Cheap is never a good thing when it comes to your Jeep
mcgee10 is offline   Quote Quick Reply
Old 06-14-2013, 08:26 AM   #22
THW
Jeeper
 
THW's Avatar
 
Join Date: Jun 2012
Location: Litchfield Hills area, Connecticut
Posts: 780
Quote:
Originally Posted by 12thman View Post
Every few weeks this comes up on this forum.*I work in an oil refinery. As far as using anything in your Jeep other than what the owner's manual calls for, that's foolish. I will let you in on some secrets. Most of the nation's refineries are on the coasts. Gas stations close to those refineries get their gas at the refineries. Stations that don't have their own refinery nearby buy it from one that is local. If you move inland, the trucks pick up from terminals where we all ship gasoline to them via pipeline and it all gets mixed together in the tanks. The only thing you are getting different from another station is the additive. There isn't a requirement for how much additive, either. It can be one drop per tanker. Also be aware that just because it says one name on the sign, it's not necessarily that station. I work for an independant refiner, meaning we don't drill. We own hundreds of Shell stations in the Bay Area. Not one of them is actually Shell and if you look at the very fine print you will see it says, "operated by xxxxxx". You might also notice that none of the fuels say Shell with V-Power-their additive. To make it even more confusing, at my refinery, we have a Chevron terminal where their trucks come in and pick up fuel to take to their stations. On top of that, we all buy fuel from each other during maintenance shutdowns to fulfill our contracts. Ultimately, buy the cheapest gas at the recommended octane and if you want Techron, go buy it in the bottle at the auto parts store. It will still be cheaper.
Yup. To add to this, those trucks that pick up the gas and deliver it are often owned by independent distributors who sell and deliver the gas to multiple brands of gas stations (which are usually just franchises with private owners). So your "Chevron gas" could have been drilled by BP, refined by an independent, sold to a Shell terminal, sold to an independent distributor, and finally delivered to a gas station wholly owned by some dude named Bob who pays Chevron for the right and privilege to put their name on his sign. The same delivery truck's next stop might be Phil's Gas-O-Rama down the street.
__________________
2013 Sport S Unlimited, Black
THW is offline   Quote Quick Reply
Old 06-14-2013, 10:04 AM   #23
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
Quote:
Originally Posted by 12thman View Post
Every few weeks this comes up on this forum.*I work in an oil refinery. As far as using anything in your Jeep other than what the owner's manual calls for, that's foolish.
Foolish?

Obviously you didn't read my results. I could give a sh*t where gas comes from. My cousin travels the world for Chevron and explained the supply the chain strategies to me many years ago. I don't need a speech about oil refineries and additives - in that respect you and many others here are correct.

But to say using anything other than what's specified in the owners manual is ignorant.

If you listen to many 3.6L owners, they are telling you this motor is detonating and runs better on 91 octane - despite what the "owners manual" says. If you want to discuss the effects of compression ratios, ignition timing, heat and detonation to support your statement, I'm willing to hear to what you have to say. But to simply recite what's written in Chrysler's owner's manual is completely ridiculous.

How up-to-date are owner manuals? LOL .. you're talking to someone that's in charge of technical documentation and distribution for a global medical device company. Your ER hospital stay could mean life or death dependent how accurate the lab results are in the basement of a hospital.

So when a doctor opens you up based on what the owners manual says and a lab test result in the end was a false positive - come back and explain the accuracy of that information.

There's the owner's manual and then there's real world experience - reminds me of the book worms or engineers in life that claim they are experts. In the meantime everything is falling apart around them.

The Chrysler boys (engineers) haven't figured out why their precious 3.6L Pentastar motor is falling apart in the field under certain conditions - or at least they're not telling us why its falling apart.

I had a 562ci Hemi that was designed to run on 91 octane - 10.5:1 compression, aluminum heads, Ross pistions, Eagle rods, MSD ignition - in the real world it ran better when I fed it 100 octane fuel.

Explain that please.



.
__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Old 06-14-2013, 11:58 AM   #24
THW
Jeeper
 
THW's Avatar
 
Join Date: Jun 2012
Location: Litchfield Hills area, Connecticut
Posts: 780
Quote:
Originally Posted by m998dna View Post
Foolish?

Obviously you didn't read my results. I could give a sh*t where gas comes from. My cousin travels the world for Chevron and explained the supply the chain strategies to me many years ago. I don't need a speech about oil refineries and additives - in that respect you and many others here are correct.

But to say using anything other than what's specified in the owners manual is ignorant.

If you listen to many 3.6L owners, they are telling you this motor is detonating and runs better on 91 octane - despite what the "owners manual" says. If you want to discuss the effects of compression ratios, ignition timing, heat and detonation to support your statement, I'm willing to hear to what you have to say. But to simply recite what's written in Chrysler's owner's manual is completely ridiculous.

How up-to-date are owner manuals? LOL .. you're talking to someone that's in charge of technical documentation and distribution for a global medical device company. Your ER hospital stay could mean life or death dependent how accurate the lab results are in the basement of a hospital.

So when a doctor opens you up based on what the owners manual says and a lab test result in the end was a false positive - come back and explain the accuracy of that information.

There's the owner's manual and then there's real world experience - reminds me of the book worms or engineers in life that claim they are experts. In the meantime everything is falling apart around them.

The Chrysler boys (engineers) haven't figured out why their precious 3.6L Pentastar motor is falling apart in the field under certain conditions - or at least they're not telling us why its falling apart.

I had a 562ci Hemi that was designed to run on 91 octane - 10.5:1 compression, aluminum heads, Ross pistions, Eagle rods, MSD ignition - in the real world it ran better when I fed it 100 octane fuel.

Explain that please.



.
I'm sure you're correct about the science, but you're wrong from a legal perspective. Try taking a blown 3.6 to the dealership after running 91 octane in it and expecting the warranty to cover it. As dumb as the owner's manual might be as a matter of mechanical function or efficiency, it's basically the bible with regard to the legal parameters of reasonable use. Even if you could somehow prove that the 91 octane is actually better for some reason (not that such proof would actually bring the issue under warranty protection) you'd have to endure substantial litigation costs in order to get the opportunity to do so. Until my lifetime powertrain runs out, I'll stick with the recommended octane!
__________________
2013 Sport S Unlimited, Black
THW is offline   Quote Quick Reply
Old 06-14-2013, 12:20 PM   #25
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
Quote:
Originally Posted by THW View Post
I'm sure you're correct about the science, but you're wrong from a legal perspective. Try taking a blown 3.6 to the dealership after running 91 octane in it and expecting the warranty to cover it. As dumb as the owner's manual might be as a matter of mechanical function or efficiency, it's basically the bible with regard to the legal parameters of reasonable use. Even if you could somehow prove that the 91 octane is actually better for some reason (not that such proof would actually bring the issue under warranty protection) you'd have to endure substantial litigation costs in order to get the opportunity to do so. Until my lifetime powertrain runs out, I'll stick with the recommended octane!
That can be debated... Chrysler claims this engine runs on 87 octane gas - which it does. If they openly admit there's a design issue and it really needs 91 octane fuel then there will be a class action lawsuit.

I've read enough to believe there's an inherent design flaw in the 3.6L Pentastar.. and Chrysler's claims of engineering robustness is hot air - pun intended.

I will feed my 3.6L what it likes.. I'd rather avoid dealer visits and multiple head swaps.



.
__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Old 06-14-2013, 12:35 PM   #26
Member
 
Join Date: Aug 2011
Location: Hurricane, UT
Posts: 7,743
Brand of gas / driving style?
Uhm guys? maybe you haven't noticed but you are driving a Jeep. Not a cadillac STS. You fill it, it goes. I guess it's the new age yuppie "Hey these JKs are neat!" thing.

Driving style?
You get in and go. Most of you are mall crawlers or you wouldn't be discussing gas anyway. There is no "Style". Techniques for offroading...YES. "Style"? No..unless you are discussing hats, is this dress to short, the wind musses my hair.

Get a life, go enjoy your ride. Jeeping is not an anal retentive experience. It's more like...this. 70 miles from my house. And I kept this vid simple so even non mods can understand what they can do. He isn't worried about gas, or style. He IS Style.

CrazyBull is offline   Quote Quick Reply
Old 06-14-2013, 12:49 PM   #27
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
That's all well and good until the thing pukes trans oil all over those nice boulders.

Read the recent recall notices.



.
__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Old 06-14-2013, 01:38 PM   #28
Member
 
Join Date: Aug 2011
Location: Hurricane, UT
Posts: 7,743
Quote:
Originally Posted by m998dna View Post
That's all well and good until the thing pukes trans oil all over those nice boulders.

Read the recent recall notices.



.
12' Stick and I do have skids. And a few other attachments...
CrazyBull is offline   Quote Quick Reply
Old 06-14-2013, 05:14 PM   #29
THW
Jeeper
 
THW's Avatar
 
Join Date: Jun 2012
Location: Litchfield Hills area, Connecticut
Posts: 780
Quote:
Originally Posted by m998dna View Post
That can be debated... Chrysler claims this engine runs on 87 octane gas - which it does. If they openly admit there's a design issue and it really needs 91 octane fuel then there will be a class action lawsuit.

I've read enough to believe there's an inherent design flaw in the 3.6L Pentastar.. and Chrysler's claims of engineering robustness is hot air - pun intended.

I will feed my 3.6L what it likes.. I'd rather avoid dealer visits and multiple head swaps.



.
Good luck to that class in their argument against Chrysler's Motion to Dismiss their action for failure to state a claim. You need to show harm to prevail on a design defect claim- annoyingly ticking engines and even legitimately blown heads that are replaced in good faith pursuant to the warranty ain't gonna cut it!
__________________
2013 Sport S Unlimited, Black
THW is offline   Quote Quick Reply
Old 06-14-2013, 07:12 PM   #30
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 3,090
Quote:
Originally Posted by THW View Post
Good luck to that class in their argument against Chrysler's Motion to Dismiss their action for failure to state a claim. You need to show harm to prevail on a design defect claim- annoyingly ticking engines and even legitimately blown heads that are replaced in good faith pursuant to the warranty ain't gonna cut it!
The question is who's side would you be on?

__________________
2013 Wrangler JKUR10A 3.6L DOHC - MDH 032515
:: 2002 Chevrolet G3500 LWB 8.1L - motovan
:: 1991 Cherokee Laredo 4.0L HO - resto in-process
:: 2010 Cherokee SRT8 6.1L Hemi - sold
:: 1965 Plymouth Sedan 562ci Hemi - sold
m998dna is online now   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:37 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC