Best Oil for the Jeep Wrangler Sport S - Page 3 - 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 03-26-2014, 09:44 PM   #61
Jeeper
 
Commander 800XT's Avatar
 
Join Date: Mar 2014
Location: North East, PA (Just East of Erie PA)
Posts: 49
Wow, everything is going to 0-20 and in my 2010 Ford it sounds like the motor is coming a part when it cold and I first start it. Glad to see they are sticking to 30 weight.

Commander 800XT is offline   Quote Quick Reply
Old 03-26-2014, 09:46 PM   #62
Jeeper
 
Commander 800XT's Avatar
 
Join Date: Mar 2014
Location: North East, PA (Just East of Erie PA)
Posts: 49
Quote:
Originally Posted by ASE_MasterTech View Post
Just a few words of advise (mechanically speaking);
The Pentastar V-6 is a VVT (variable valve timing) engine accomplished via camshaft phasers which are operated by engine oil, and as such are extremely reliant on oil viscosity pre-engineered into their operational specs.
Any changes in oil viscosity directly affect the phasers positioning/timing of the camshaft possibly causing valvetrain components to fall outside 'safe' limits set by the manufacturer, which may result in a lack of performance &/or engine damage/failure.
These facts are easy to check with an internet search..

To those concerned with warranty issues using other than 'recommended' products, many people confuse 'recommended' with 'specified'. It is a violation of the 'Magnuson–Moss Warranty Act' to refuse warranty work based on the consumers use of a standard replacement off-brand product as long as that product "meets or exceeds manufacturers specifications".
Unfortunately, using a viscosity other than the one that is 'manufacturer specified' would exclude any resulting damage from warranty coverage.

Hope this post helps out..
Good to know, thanks!!

Commander 800XT is offline   Quote Quick Reply
Old 03-26-2014, 11:00 PM   #63
Jeeper
 
ASE_MasterTech's Avatar
 
Join Date: Feb 2014
Location: New Jersey
Posts: 150
Quote:
Originally Posted by WatchThis! View Post
Changes in viscosity has to be accounted for in the programming since the vis of the oil is not a constant. I can see this being a big issue if someone was to do something like run a 20w50 blend.

Since viscosity varies inversely with temperature, its particular value at any given temperature can be determined precisely at any time across an operating range. Regardless, modern engine management systems operate relatively static until certain conditions are met, one being operating temp, at which time oil viscosity is a known metric & valve timing is permitted to occur as required.
If you are using a 5/30 in place of 5/20, it means that the phasers & programming that were designed to operate with the dynamics of a fluid with characteristics of 20 weight oil at operating temp, are now using a thicker 30 weight at temps oil, & it won't know that. You may not notice anything but that doesn't mean that other systems (knock sensors, fuel trim adjusts, etc...) aren't just compensating, who would want that.
At the end of the day, if you have an engine issue & it is determined (say via sampling) that other than specified oil was used (ie-wrong/different viscosity) your warranty could be voided.
Someone please explain the benefits gained by using an other than specified viscosity, vs the risk of losing warranty coverage??
For those without warranty's (or just don't care), consider yourself advised & proceed at your own peril.

No offense intended..
ASE_MasterTech is offline   Quote Quick Reply
Old 03-26-2014, 11:22 PM   #64
Jeeper
 
Old Dogger's Avatar
 
Join Date: May 2012
Location: Phoenix, Rattlesnake Country
Posts: 3,143
^^^Everything that you are saying here, makes sense, and thank you for that.

But the piece of the puzzle that you are missing is that the 3.6 was designed (confirmed by Chrysler/Jeep Technical service), to run on 5w30 viscosity, but have now recommended 5w20, because of CAFE! (The hammer was on them from the FEDS)!
So the bottom line is the factory (Chrysler/Jeep) is saying that either 5w20, or 5w30 is acceptable for usage in their 3.6 designed engine.
So this phase timing, can't be that critical to the engines longevity, or performance, because if it was, then the factory would not have given in to the FEDS!!!!!!
Old Dogger is offline   Quote Quick Reply
Old 03-26-2014, 11:34 PM   #65
Jeeper
 
Scott2373's Avatar
 
Join Date: Mar 2013
Location: Williamson, NY
Posts: 1,126
I think we need some science here. Someone more adventurous than me should volunteer to run their normal oil change interval with 10-W20 then with 10-w30 and see if there is that much of a difference in mileage. Also throw in some input as to what oil the engine ran better on, and any noticeable differences in performance with either oil.
__________________
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 03-27-2014, 02:14 AM   #66
Jeeper
 
Join Date: Nov 2012
Location: In The Hot South West AZ
Posts: 996
I like the 0w30 weight oil the best. It is great both in severe cold and severe heat.
Synthetic will flow better in cold, and handle oil temperatures of up to 400 degrees, before breaking down. They are far superior to conventional oils.

A good quality synthetic is capable of running out to 25,000 miles, before TBN break down. But our air filtration system does allow silicon into our engines, so changing it at 5,000 miles is the best for engine longevity!
Miser is offline   Quote Quick Reply
Old 03-27-2014, 07:47 AM   #67
xzy
Jeeper
 
xzy's Avatar
 
Join Date: Nov 2012
Location: Toledo
Posts: 548
ASE's info has merit, but it's not the whole story in real world application. For instance most dino 5w-20 will oxidize or thicken with use. Some more than others. Synthetic can also. Some 5w-20's have a higher HTHS than some 5w-30's and they can meet or exceed 6395.

The 3.6 isn't designed and built like something going to Mars. Let's use a little common sense. 5w-30 is not harmful to the 3.6 cam phasers or any other component. There can't be warranty denial based on using 5w-30 especially if it meets spec. A case of beer to anyone who can prove otherwise.

Did anyone read my post on page 2. I'll repeat it here. Proof positive like O.D. 5w-20 is CAFE and nothing more. Fiat owners manual recommends 5W-30 for the European 2014 Freemont AWD with the 3.6 Pentastar.
xzy is offline   Quote Quick Reply
Old 03-27-2014, 08:37 AM   #68
Jeeper
 
Join Date: Dec 2010
Posts: 2,456
Quote:
Originally Posted by ASE_MasterTech View Post
Since viscosity varies inversely with temperature, its particular value at any given temperature can be determined precisely at any time across an operating range. Regardless, modern engine management systems operate relatively static until certain conditions are met, one being operating temp, at which time oil viscosity is a known metric & valve timing is permitted to occur as required.
..
Are you saying the engine constrains valve timing and/or lift at cold startup?
i82much is offline   Quote Quick Reply
Old 03-27-2014, 08:40 AM   #69
Jeeper
 
Sucker Punch's Avatar
 
Join Date: Jun 2013
Location: Nashville, TN
Posts: 1,747
__________________
Current Jeeps:
2014 Granite JKU Rubicon Half Doors
Granite Thread
1984 Blue CJ7
- Project...

Sucker Punch is offline   Quote Quick Reply
Old 03-27-2014, 08:51 AM   #70
Jeeper
 
Strokerswild's Avatar
 
Join Date: Feb 2012
Location: MN
Posts: 1,241
Since the 2012 Wranglers specified that 5W-30 was OK, it most certainly would be fine to run in a 2013+. Rest assured that nothing is different mechanically between the two, it's CAFE all the way.

I've read this on multiple other forums as well where people are doing way too much hand-wringing over a viscosity change from one year to another.
__________________
Gone but not forgotten:
'98 TJ SE - '99 TJ Sahara - '12 JK Arctic
'13 JK Sahara...too many other toys...

I Jeep, therefore I am.
Strokerswild is offline   Quote Quick Reply
Old 03-27-2014, 11:08 AM   #71
Jeeper
 
wmshay6's Avatar
 
Join Date: May 2009
Location: Absurdistan AKA- MD
Posts: 436
I don't have a dog in the fight . . . BUT

I will say this-

I just changed the oil in my '14 with 5W20 and will continue with that weight. Shell Full Synthetic.

I use the same in 5w30 in my P/U and wife's ride.

But the real reason I am here is to let folks know- if they are memebers of BJs Wholesale- they sell full synthetic shell- in both of the factory recommended weights- that meets Chrysler Spec.

It's about $26 for a 6 qt case with coupon. Just FYI basically.
__________________
2014 JKU Sport
Granite Crystal
6- Speed
3.73, Premium Soft Top, Premium Audio, Connectivity
wmshay6 is offline   Quote Quick Reply
Old 03-27-2014, 11:25 AM   #72
rotaredoM

WF Supporting Member
::WF Moderator::
 
panthermark's Avatar
 
Join Date: Aug 2011
Location: Chicago-land
Posts: 9,575
Images: 13
I still think the change on the 3.6 oil was due to the ticking, not CAFE. I don't remember the published fuel economy numbers changing from 2012 to 2013 with the exact same engine and tranny.
__________________
2013 Sahara Unlimited
Billet - Auto - 3.73 - Connectivity - Painted Hardtop - LSD - Remote Start - Saddle Leather - Side Airbags

I may mall crawl...but I look good doing it.....
panthermark is offline   Quote Quick Reply
Old 03-27-2014, 11:36 AM   #73
xzy
Jeeper
 
xzy's Avatar
 
Join Date: Nov 2012
Location: Toledo
Posts: 548
Quote:
Originally Posted by panthermark View Post
I still think the change on the 3.6 oil was due to the ticking, not CAFE. I don't remember the published fuel economy numbers changing from 2012 to 2013 with the exact same engine and tranny.
Then why does Fiat recommend 5W-30 for the European Pentastar. From the 2014 Fiat manual.

Engine
Oil Viscosity – 2.4L And 3.6L Gasoline
Engine
SAE 5W-30 engine oil is recommended for all operating
temperatures. This engine oil improves low tempera-
ture starting and vehicle fuel economy.

The engine oil filler cap also shows the recommended
engine oil viscosity for your vehicle. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in “Servicing And Care” for further information.
xzy is offline   Quote Quick Reply
Old 03-27-2014, 12:00 PM   #74
Jeeper
 
ScarletVarlet's Avatar
 
Join Date: Oct 2013
Location: Middle of the West Coast, when home. Middle of the desert, stuck in sand, when not home.
Posts: 225
Images: 1
Just to throw in my two cents (and stick my neck in the proverbial noose) how you use your oil is more important than what oil you chose.

I once lived in the Great White North and know well of the temperature ranges the OP experiences. I put over 300,000 miles on various cars and saw to my oil changes religiously in engines from low RPM big block V8 engines and high RPM four-bangers. The car I left the north with was a 2.3L EFI turbocharged four-banger, with 200,000 miles on the completely original engine. Many people told me getting 200K miles out of a turbocharger was nigh on impossible.

How'd I do that? I retired the car after 273K miles because of structural failure rather than power train or engine fault. A lesson I picked up on from a fellow who went through turbos on a regular basis was this:

1. Do not run at high RPM until your engine is up to normal operating temperature

At cold or even freezing temperatures your oil has a heavier viscosity, in freezing temps it could be almost congealed. As the oil is pumped about and warms up it has varying viscosity as cooler and warmer oil mixes, lubrication is less than ideal. Keep your RPMs to the minimum and you'll reduce overall engine wear.

2. Do not run at high RPM and then shut off your ignition. Your engine has just run hot, very hot. Idle it for a minute or two to give the cooling system time to bring temperatures back down. You have valves, heads, cylinder walls, rings, piston heads, exhaust manifolds and exhaust system which are all well above normal temperatures. A turbo charger rotates on a bearing of oil and the exhaust end may be glowing orange. Turning off the engine doesn't help cool any of this equipment down, even normal operating temperature exhaust will cool valves and the exhaust system. Simply shutting own a hot engine leaves things to cook, further any oil exposed to these higher temperatures forms abrasive carbon deposits. A killer for turbos and certainly no help to any other moving parts.

3. Change the oil as recommended or after more frequently after heavy use in extreme heat.

It's a simple recipe for engine life.
ScarletVarlet is offline   Quote Quick Reply
Old 03-27-2014, 12:26 PM   #75
rotaredoM

WF Supporting Member
::WF Moderator::
 
panthermark's Avatar
 
Join Date: Aug 2011
Location: Chicago-land
Posts: 9,575
Images: 13
Quote:
Originally Posted by xzy View Post
Then why does Fiat recommend 5W-30 for the European Pentastar. From the 2014 Fiat manual.

Engine
Oil Viscosity – 2.4L And 3.6L Gasoline
Engine
SAE 5W-30 engine oil is recommended for all operating
temperatures. This engine oil improves low tempera-
ture starting and vehicle fuel economy.

The engine oil filler cap also shows the recommended
engine oil viscosity for your vehicle. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in “Servicing And Care” for further information.
Different gas in Europe? (They run a higher octane/RON)
Hasn't been updated yet? (Remember how long it took to update the European tow ratigs)
Less lawsuit happy owners who would demand a "new Jeep" over a ticking head?

I can understand CAFE, but how often does a comapany change oil specs two years after an engine is introduced?
__________________
2013 Sahara Unlimited
Billet - Auto - 3.73 - Connectivity - Painted Hardtop - LSD - Remote Start - Saddle Leather - Side Airbags

I may mall crawl...but I look good doing it.....
panthermark is offline   Quote Quick Reply
Old 03-27-2014, 01:14 PM   #76
xzy
Jeeper
 
xzy's Avatar
 
Join Date: Nov 2012
Location: Toledo
Posts: 548
^^ I emailed Fiat in Italy. I asked what oil viscosity ( 5w-20 or 5w-30 ) is used for the 2014 3.6 Pentastar in Europe. I'll post the reply if I ever get one.

Whatever they say if they ever do, I'll still use 5W-30. Nothing against 5W-20. There are some very robust 5-20's such as Amsoil SS. It's darn near 5-30, and that's the real issue isn't it ? Not all 5w-20 is the same. Heck almost none of them are. Same for 5w-30. They're too close. Either one will work.

I just choose to have a little higher HTHS for a little more protection if the oil gets too hot. It's really a saftey margin. All things being equal 5w-20 is fine as long as you don't get the oil too hot. Then it'll shear. 5w-30 will have better shear protection. It'll stay in grade better than 5w-20 all things being equal.
xzy is offline   Quote Quick Reply
Old 03-27-2014, 01:54 PM   #77
Jeeper
 
wmshay6's Avatar
 
Join Date: May 2009
Location: Absurdistan AKA- MD
Posts: 436
I just want to drive sans top . . . . .
__________________
2014 JKU Sport
Granite Crystal
6- Speed
3.73, Premium Soft Top, Premium Audio, Connectivity
wmshay6 is offline   Quote Quick Reply
Old 03-27-2014, 03:56 PM   #78
Jeeper
 
Join Date: Jun 2013
Location: Westminster, CA
Posts: 72
Quote:
Originally Posted by Scott2373 View Post
I think we need some science here. Someone more adventurous than me should volunteer to run their normal oil change interval with 10-W20 then with 10-w30 and see if there is that much of a difference in mileage. Also throw in some input as to what oil the engine ran better on, and any noticeable differences in performance with either oil.

I have a 2014 and have used 0W-40 M1 since I hit 500 miles. I get 18 around town and 23 highway running 87 CARBOB. Meets the VW spec as used in the 3.6 Routan and runs fine. UOA to come in a month or so.

I know that M1 and the range I've chosen is not approved by FCA. It does meet the temp range I operate in so I'll continue to use it unless my UOA dictates otherwise.
rick92f is offline   Quote Quick Reply
Old 03-27-2014, 03:59 PM   #79
Jeeper
 
Join Date: Jun 2013
Location: Westminster, CA
Posts: 72
Quote:
Originally Posted by panthermark View Post
Different gas in Europe? (They run a higher octane/RON)
Hasn't been updated yet? (Remember how long it took to update the European tow ratigs)
Less lawsuit happy owners who would demand a "new Jeep" over a ticking head?

I can understand CAFE, but how often does a comapany change oil specs two years after an engine is introduced?
As often as it takes when they're not selling enough Darts to offset the CAFE numbers.
rick92f is offline   Quote Quick Reply
Old 03-27-2014, 06:41 PM   #80
Jeeper
 
Join Date: Nov 2012
Location: In The Hot South West AZ
Posts: 996
I am staying with the 0w30 weight oil. It is a fact, that most of your engine wear, is at start up. The 0w flows the best when cold. At operating temperature in hot climates, the 30w viscosity, just makes sense to use.
I also prefer Synthetics, which flow better at low temperatures, and will shear down less at high temperatures and mileage!

I discussed this issue with Chrysler's Western Regional Service Manager. His position on it was, 0w30 would have some benefits in his opinion, but he has to recommend what the owners manual says! Internal Politics, I guess!

And yes the 5w30 2012, to 5w20 2013/14 is because of CAFE. I also got that confirmed from Jeep Technical service!
Miser is offline   Quote Quick Reply
Old 03-27-2014, 08:28 PM   #81
Jeeper
 
ASE_MasterTech's Avatar
 
Join Date: Feb 2014
Location: New Jersey
Posts: 150
Quote:
Originally Posted by i82much View Post
Are you saying the engine constrains valve timing and/or lift at cold startup?
I am not.
I am saying the engine management system 'constrains valve timing' until certain conditions are met, one of which is 'closed loop operation'.
VVT is a compromise/substitute between 2 engine operation cycle systems, Otto & Atkinson. It works very well when operated within it's design parameters.
If you are familiar with these systems, the basics of 'Control theory', & mechanical engineering as it applies to modern engine design, I don't think you would be asking this question.

Look, if folks want to run 5w/30 over 5w/20 & it's working ok for them, fine, who am I to argue.
I'm just trying to explain in simple terms the reasons why a mechanic might not agree with that choice, or a reasonable person might not want to risk voiding a warranty for no obvious benefit.
ASE_MasterTech is offline   Quote Quick Reply
Old 03-27-2014, 08:47 PM   #82
rotaredoM

WF Supporting Member
::WF Moderator::
 
panthermark's Avatar
 
Join Date: Aug 2011
Location: Chicago-land
Posts: 9,575
Images: 13
The fuel economy numbers did not change from 2012 to 2013 and 2014.

Gas Mileage of 2012 Jeep Wrangler

Gas Mileage of 2013 Jeep Wrangler

Gas Mileage of 2014 Jeep Wrangler

While it "could" be CAFE, I still find it hard to believe that a new engine was designed to run on 5W-30, had head issue (especially in the Wrangler), and then had the recommended oil changed to 5W-20 without their being some sort of connection.

__________________
2013 Sahara Unlimited
Billet - Auto - 3.73 - Connectivity - Painted Hardtop - LSD - Remote Start - Saddle Leather - Side Airbags

I may mall crawl...but I look good doing it.....
panthermark is offline   Quote Quick Reply
Old 03-27-2014, 09:11 PM   #83
Jeeper
 
Old Dogger's Avatar
 
Join Date: May 2012
Location: Phoenix, Rattlesnake Country
Posts: 3,143
The fuel improvement between the two oils, is very minuet, but it does exist. And that helps the factories to comply with the Federal mandates!

It wouldn't be large enough for the estimated published MPG to change between these years. It is not going to give you a mile per gallon difference, but maybe only .2 of a gallon improvement. Bob the oil guy says, that it is almost non-detectable, unless you have a very sophisticated fuel consumption reader. But without this reader, there is no way that you will see, or recognize any difference.
Old Dogger is offline   Quote Quick Reply
Old 03-27-2014, 09:16 PM   #84
Newb
 
Join Date: Mar 2014
Posts: 4
Thanks guys, the help has been through the roof with my 26k investment.
Kyonic is offline   Quote Quick Reply
Old 03-27-2014, 09:44 PM   #85
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 2,297
Quote:
Originally Posted by xzy View Post
^^ I emailed Fiat in Italy. I asked what oil viscosity ( 5w-20 or 5w-30 ) is used for the 2014 3.6 Pentastar in Europe. I'll post the reply if I ever get one.

Whatever they say if they ever do, I'll still use 5W-30. Nothing against 5W-20. There are some very robust 5-20's such as Amsoil SS. It's darn near 5-30, and that's the real issue isn't it ? Not all 5w-20 is the same. Heck almost none of them are. Same for 5w-30. They're too close. Either one will work.

I just choose to have a little higher HTHS for a little more protection if the oil gets too hot. It's really a saftey margin. All things being equal 5w-20 is fine as long as you don't get the oil too hot. Then it'll shear. 5w-30 will have better shear protection. It'll stay in grade better than 5w-20 all things being equal.

I changed my 2013 to POY 5w-30 because I was seeing coolant temps reaching 225 degrees during the summer. I did some reading on BTOG and found there is a difference between 5w-30 and 5w-20 in terms of the amount of viscosity improvers (VI) added and maintaining stability over the life.

This could be the reason Chrysler moved from 5w-30 to 5w-20 in 2013... especially with the head problem. As stated on BTOG website, 5w-20 has some advantages over 5w-30.

dave1251 has some informative posts...

5w20 vs 5w30 | Passenger Car Motor Oil (PCMO) - Gasoline Cars/Pickups/Vans/SUVs | Bob Is The Oil Guy

.
__________________
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 03-27-2014, 09:51 PM   #86
xzy
Jeeper
 
xzy's Avatar
 
Join Date: Nov 2012
Location: Toledo
Posts: 548
Quote:
Originally Posted by ASE_MasterTech View Post
I am not.

I'm just trying to explain in simple terms the reasons why a mechanic might not agree with that choice, or a reasonable person might not want to risk voiding a warranty for no obvious benefit.
Thanks for your knowledge on the subject. You've explained it very well. One obvious benefit for me is that my engine is quieter. Not just at start up but overall. Another real world benefit is that a higher HTHS will generally protect ( less chance of shearing ) better at higher temperatures than a lower HTHS. I've tried 5w-20 with a 2.6 HTHS ( and again a 20 oil can have a HTHS between 2.2 and 2.9 if I remember correctly ) My engine seemed noisier than with 5w-30 with a 3.2 HTHS which is on the low end of 30 weight. I've also blended 5w-20 and 5w-30 in various percentages.

It's not hard to realize a slight fuel mileage increase with 5w-20 compared to 5w-30. Again it depends on where the HTHS numbers fall all things being equal. It was more noticeable on longer runs at a specific mph/ similar conditions etc, although it's virtually impossible to have an exact control. Nevertheless I'm sure I had somewhat better mileage with 5w-20. There's simply less drag in the engine. If I can detect a difference, you bet Fiat can too.
xzy is offline   Quote Quick Reply
Old 03-27-2014, 09:56 PM   #87
Jeeper
 
Old Dogger's Avatar
 
Join Date: May 2012
Location: Phoenix, Rattlesnake Country
Posts: 3,143
Yes, Dave lives about 30 miles southeast of myself, and is a very knowledgeable oil guy!
But when he is talking about the 5w30 shearing down faster, because of the additive package, he is referring to Conventional oil. Which will shear down to 5w20 in about 1000 miles in many cases.
But the synthetics that many of us use, are very stable, with minimal to no shearing. So the 5w30 is very stable!

Also conventional oil, usually will break down in temperatures of 250 to 300 degrees. Where Synthetics are good up to about 400 degrees oil temperature.

In some ways, it is hilarious that we all post about oils and viscosity, and how critical it maybe. But when is the last time that you have heard of anybody having a engine failure because of it being oil related. (Take those that run their engines out of oil out of the equation).
Old Dogger is offline   Quote Quick Reply
Old 03-27-2014, 10:03 PM   #88
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 2,297
Quote:
Originally Posted by xzy View Post
Thanks for your knowledge on the subject. You've explained it very well. One obvious benefit for me is that my engine is quieter. Not just at start up but overall quieter.

That is what I noticed after pouring 5w-30 into the crankcase. I may move to 5w-20 Pennzoil Platinum at my next change - don't know yet since eveything is going well.

Currently I'm not using any oil with 5w-30 Pennzoil yellow.

.
__________________
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 03-27-2014, 10:11 PM   #89
Supporting Member

WF Supporting Member
 
m998dna's Avatar
 
Join Date: Jan 2012
Posts: 2,297
Quote:
Originally Posted by Old Dogger View Post
Yes, Dave lives about 30 miles southeast of myself, and is a very knowledgeable oil guy!
But when he is talking about the 5w30 shearing down faster, because of the additive package, he is referring to Conventional oil. Which will shear down to 5w20 in about 1000 miles in many cases.
But the synthetics that many of us use, are very stable, with minimal to no shearing. So the 5w30 is very stable!

Also conventional oil, usually will break down in temperatures of 250 to 300 degrees. Where Synthetics are good up to about 400 degrees oil temperature.

In some ways, it is hilarious that we all post about oils and viscosity, and how critical it maybe. But when is the last time that you have heard of anybody having a engine failure because of it being oil related. (Take those that run their engines out of oil out of the equation).
None... nadda... zipp.

Factory fill is 5w-20 Pennzoil conventional... using 5w-30, so far so good.

Are you using 5w20 Pennzoil Platinum? ... I may change to syn 5w-20 at my next change.

.
__________________
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 03-27-2014, 10:21 PM   #90
Jeeper
 
Join Date: Feb 2014
Location: Fallbrook, CA
Posts: 217
The cam phasers generally have a pressure side, and a sensor side. That is, the computer adjusts the solenoids to provide some sort of advance/retard on the cam. The sensor on the other end monitors the actual position of the cam. The computer can still achieve the desired cam phase, because it's a closed loop system. I suppose there is an expectation that solenoid input value X should produce cam phase Y, but it's probably a heuristic, and there is "wiggle-room". As long as the closed loop system can accommodate the request from the computer, no code will be stored.

ASE_MasterTech, since I don't actually have my Jeep yet, can you confirm if the Pentastar has cam position sensors?

Subaru guys swear by Rotella 5w40 even though manual calls for 5w30. BMW E39 M5 guys wrestle with North America calling for a sudden change to 5w30 from 10w60, while the rest of the world still calls for 10w60 in the same engine. Reality? Most of those engines last a very long time.

Paylor is offline   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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 02:37 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