Oil Change Interval w Synthetic Blend? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ 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 12-05-2010, 10:33 AM   #1
Jeeper
 
Join Date: Jul 2010
Location: Catawissa, Mo.
Posts: 140
Oil Change Interval w Synthetic Blend?

My Jeep has a 4.0 in it with 130,000 miles. The guy that had it before me said he was having it changed at the Valvoline oil change place and that he had switched it to the high mileage oil. I've been changing it and using the Max Life Synthetic Blend figuring that is what they were putting in it when he had it changed. I just wanted to get others opinions on what intervals they are using? I like to change my oil at 3000 miles but with the synthetic blend I figure that may be overkill since pretty much all of my miles are highway. I was thinking more like 5000 miles.

__________________
2000 Wrangler Sport
4.0 Litre
5 Speed
180,000 Miles
fonecop1 is offline   Quote Quick Reply
Old 12-05-2010, 10:39 AM   #2
Jeeper
 
coolbreeze's Avatar
 
Join Date: Jul 2009
Location: Redding, Ca
Posts: 855
5,000 should be fine. If you are worried, do an oil analysis

__________________
2004 Black X 4.0, auto, 3.73's, soft top 31-10.5-15 Toyo A/T's on 8" Ultra 175's, 2" Teraflex BB.
coolbreeze is offline   Quote Quick Reply
Old 12-05-2010, 10:39 AM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,368
Images: 2
3K oil change intervals were dreamed up by the quick change joints like JiffyLube to generate more $$$. Most of us are fine with 5K or even 7.5K intervals unless you are driving in dusty or other extreme conditions.

Dino and synthetic engine oils collect dirt, combustion byproducts, acids, etc. at exactly the same rate and conventional oil filters leave most of that in the oil. No conventional oil filter can filter out the combustion byproducts or acids that collect. So while it may be true that synthetic oil itself can last longer, that doesn't mean the oil doesn't get dirty at a slower rate. So at least in my world, I would change either type oil at the same interval. I would not and do not buy into the longer interval myths pushed by the proponents of synthetic engine oils for that reason... oil gets dirty at the same rate whether it is synthetic or mineral based.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 12-05-2010, 11:27 AM   #4
Jeeper
 
jasonwrangler's Avatar
 
Join Date: Oct 2010
Location: Omaha, NE
Posts: 892
Id just get dino oil and change it more frequently
jasonwrangler is offline   Quote Quick Reply
Old 12-05-2010, 11:33 AM   #5
Member
 
Join Date: Sep 2010
Location: Riverton, Wyoming
Posts: 139
I agree; the 3000-mile oil change myth is alive and well. Quickie oil change places came up with this as a part of their overall marketing strategy. I do not agree with their marketing plan, nor do I use their services.

I always recommend following Jeep's own recommendations as set forth in their owner's manual. For my '05 TJL, Jeep recommends using 10w30 (for my cllimate range) and changing it at 3k intervals, so that's what I do.

Yours may recommend differently. Check your owner's manual if unsure. Dismissing lubrication specs from powertrain engineers to save a buck is not my style.
JD Adams is offline   Quote Quick Reply
Old 12-07-2010, 09:10 PM   #6
Jeeper
 
CRolandLJ's Avatar
 
Join Date: Nov 2010
Location: DFW, TX
Posts: 316
If I am switching from the Synthetic that the PO had been using to a conventional oil, do i need to do anything specific besides just a regular ole oil change. I have used conventional the whole time I've been driving in my previous cars so I know nothing about synthetics and am not concerned about their longer life because IMO oil getting dirty is more of a worry than it breaking down especially because where i live has a dusty rock road.
CRolandLJ is offline   Quote Quick Reply
Old 12-07-2010, 10:39 PM   #7
Jeeper
 
meyers's Avatar
 
Join Date: Apr 2009
Location: Dover, New Hampshire
Posts: 738
Nope just a normal oil and filter change is all you need. Just make sure you get yourself a good oil filter that is the key. Stay away from FRAM or other big-box store discounted brands. FRAM isn't what it used to be and a lot of people have problems with them. I like WIX myself.
meyers is offline   Quote Quick Reply
Old 12-07-2010, 11:10 PM   #8
Jeeper
 
tomslusher's Avatar
 
Join Date: May 2010
Posts: 96
Quote:
Originally Posted by Jerry Bransford View Post
oil gets dirty at the same rate whether it is synthetic or mineral based.

Dirty oil is not really (usually) the reason you change oil, it's breakdown and engine wear. I used to all the time and occasionally still have my oil tested and no where in the result said anything about dirt, or at least it being above accepted norms. The test results talked about ppm of metals and other internal engine components and breakdown. Being that synthetic is much slicker than dino oil, there is much less PPM metal and such. And synthetics breakdown at a far higher temp and longevity than dino oils, thus they last longer.

In my Ford Superduty 5.4l I would be at 7500 or 8000 miles and have my oil tested. The testing company (ever hear or Schaffer Oil?, they sell to large comapanies and farmers, construction companies, ect) and the test said to go longer, up to 10,000. I usually chickened out at that point and never really went past that. They truck just passed 195,000 miles with no engine problems (I guess It will blow tomorrow, now that I said that).

Some people say that when you switch to synthetic from dino, you can't go back, but I have no idea if that is true or just a bunch of crap. I do know most arguements that state you shouldn't start a brand new engine with synthetic have been debunked as most high end cars and even others are now coming brand new with synthetic from the factory.

That's about all I know about oil, except warming it in the microwave before "bedtime" is a good idea.

tomslusher
__________________
When reinventing the wheel, think rounder!!
tomslusher is offline   Quote Quick Reply
Old 12-07-2010, 11:11 PM   #9
Jeeper
 
tomslusher's Avatar
 
Join Date: May 2010
Posts: 96
And as far a filters, I can't remember the last time I used anything other than NAPA gold. Always seems to test fine for me.

tomslusher
__________________
When reinventing the wheel, think rounder!!
tomslusher is offline   Quote Quick Reply
Old 12-07-2010, 11:13 PM   #10
Jeeper
 
tomslusher's Avatar
 
Join Date: May 2010
Posts: 96
Oh crap, I see I just disagreed with Jerry, as in "THE JERRY"!!!! Disregard everything I said as I walk backwards out of the room while bowing.
__________________
When reinventing the wheel, think rounder!!
tomslusher is offline   Quote Quick Reply
Old 12-07-2010, 11:47 PM   #11
Jeeper
 
CRolandLJ's Avatar
 
Join Date: Nov 2010
Location: DFW, TX
Posts: 316
That's an interesting bit of data. I suppose the moral of all this is just change your oil often enough and use a good filter. Maybe to be safe I will just stick with synthetic since that's what's in it. Maybe I'll research the transition elsewhere
__________________
2006 Wrangler Unlimited
Bone Stock
Still fun
CRolandLJ is offline   Quote Quick Reply
Old 12-08-2010, 02:14 AM   #12
Jeeper
 
Jiffydarren's Avatar
 
Join Date: Feb 2009
Posts: 530
Send a message via AIM to Jiffydarren
Quote:
Originally Posted by Jerry Bransford View Post
3K oil change intervals were dreamed up by the quick change joints like JiffyLube to generate more $$$.
Actually, that's not so. If you have been to a Jiffy Lube recently (which I doubt) The manufacturer's reccomendations for oil change schedule are now followed. The OCS (Oil Change Schedule) empowers the customer to choose between the old 3/3 adage, the manufacturer's reccomendation, or select another mileage altogether. Whichever mileage is chosen will appear on the sticker.

Don't be too hard on us Jiffy Lubers, we aren't crooks or scammers... we simply inform the customer of what is recommended and leave the decisions to the customer.
__________________
Losing hours at work? Taxes up on your paycheck? Having trouble finding a doctor? Your kids trashy?

You voted for it... Stop complaining.
Jiffydarren is offline   Quote Quick Reply
Old 12-08-2010, 07:02 AM   #13
Jeeper
 
meyers's Avatar
 
Join Date: Apr 2009
Location: Dover, New Hampshire
Posts: 738
One thing a lot of people leave out of this is the fact that a DIY oil change is also the time you get to hang out under the Jeep and bond with it, notice anything else going on. I myself enjoy my oil change time. Just me in the peaceful world of Jeepdom usually my dog makes an appearance and all is good. I also like to pretend that I cannot hear anything my wife is saying while I am under there
meyers is offline   Quote Quick Reply
Old 12-08-2010, 07:02 AM   #14
Jeeper
 
TJeepman's Avatar
 
Join Date: May 2010
Location: Nova Scotia
Posts: 676
Quote:
Originally Posted by fonecop1 View Post
My Jeep has a 4.0 in it with 130,000 miles. The guy that had it before me said he was having it changed at the Valvoline oil change place and that he had switched it to the high mileage oil. I've been changing it and using the Max Life Synthetic Blend figuring that is what they were putting in it when he had it changed. I just wanted to get others opinions on what intervals they are using? I like to change my oil at 3000 miles but with the synthetic blend I figure that may be overkill since pretty much all of my miles are highway. I was thinking more like 5000 miles.
Any where between 3000 and 6000 miles should work, even for conventional oil. Chrysler has generally upped its oil change interval to 6000 miles in recent years. I change mine at about 4500 miles using conventional oil.
State of California did oil change interval tests a few years back using Fram Extended Guard oil filters. Here's their results as to the 3000 mile oil change being overkill. Take a look at Pages 23 and 32 to 34.
__________________
2003 Jeep TJ Sport - 4.0L - 251,430 kms
2002 and 2007 Grand Caravans - Sport & SXT
TJeepman is offline   Quote Quick Reply
Old 12-08-2010, 11:10 AM   #15
Jeeper
 
norville's Avatar
 
Join Date: Mar 2010
Location: pa
Posts: 69
I use mobile 1 and change it every 5000 miles, mostly cause it's a nice easy way to remember to change the oil. I only put on about 10k a year any way. I use dino oil in the wife's van and change it about the same but, she puts on a lot more miles than me. The oil in here van alway's looks nice. I;ve had older vehicles that I would change every 3k and it was like black paint. I think that had everything to do with me using a carb I think FI removed a lot of those issues....

bob
__________________
thanks,

bob
norville is offline   Quote Quick Reply
Old 12-08-2010, 11:23 AM   #16
Jeeper
 
Maximus1956's Avatar
 
Join Date: Sep 2010
Location: Colorado
Posts: 70
Oil change interval also would depend on conditions. Dust/dirt/smog, length of time in the engine, miles driven. With that said, I've had two BMW cars, which all come with sythetic oil. My oil change intervals were between 14,000 and 17,000 miles. Never had an issue with the engine. With synthetic, 10,000 (Mobil1 anyway) should not be an issue at all. Look on Mobil web site. The extensive testing of Mobil 1 is impressive.
__________________
Let me tell ya somethin'
Maximus1956 is offline   Quote Quick Reply
Old 12-08-2010, 11:25 AM   #17
Jeeper
 
TJeepman's Avatar
 
Join Date: May 2010
Location: Nova Scotia
Posts: 676
Quote:
Originally Posted by TJeepman View Post
Any where between 3000 and 6000 miles should work, even for conventional oil. Chrysler has generally upped its oil change interval to 6000 miles in recent years. I change mine at about 4500 miles using conventional oil.
State of California did oil change interval tests a few years back using Fram Extended Guard oil filters. Here's their results as to the 3000 mile oil change being overkill. Take a look at Pages 23 and 32 to 34.
Ooops, left out the LINK.
Quote:
The buffering capacity (TBN) appeared to fail before other oil parameters, and was identified as the limiting factor for extending drain intervals in these vehicles. The previous DGS oil change interval was 6,000 miles. Based on TBN values, the analysis showed the oil to be acceptable up to approximately 10,000 miles.
__________________
2003 Jeep TJ Sport - 4.0L - 251,430 kms
2002 and 2007 Grand Caravans - Sport & SXT
TJeepman is offline   Quote Quick Reply
Old 12-08-2010, 12:57 PM   #18
Jeeper
 
virginian's Avatar
 
Join Date: Sep 2010
Location: Chattanooga, TN
Posts: 216
A car is not a Jeep is not a car, but the underside of my hood and owner's manual suggests 7500 miles.

That's in 1988 for an Accord--not modern synthetic oil times.
virginian is offline   Quote Quick Reply
Old 12-08-2010, 01:01 PM   #19
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,368
Images: 2
Quote:
Originally Posted by Jiffydarren View Post
Actually, that's not so. If you have been to a Jiffy Lube recently (which I doubt) The manufacturer's reccomendations for oil change schedule are now followed.
Please re-read what I said. I said the 3K oil change interval gimmick was originally dreamed up by the quick change joints like JiffyLube to increase their revenues. You are simply saying that JiffyLube's policy no longer solely pushes that 3,000 mile interval like they did in years past.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 12-08-2010, 01:33 PM   #20
Jeeper
 
Join Date: Jan 2010
Posts: 191
I haven't been to a Jiffy Lube in some time. Every time I did go, the technicians would bring the "dirty" air filters to the waiting customers to convince them that the little bit of dirt they pointed to meant a perfectly good air filter needed to be changed. Every time.

Then when they failed to fill up my daughter's auto transmission on her Liberty after "changing" the fluid I decided no more.

They are much better than some other chains, however. I love Firestone's urgent recommendations for flushing out the fuel injectors and "cleaning" the brakes.
KCrisp is offline   Quote Quick Reply
Old 12-08-2010, 01:39 PM   #21
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,368
Images: 2
Yep, the last time I was at a JiffyLube, maybe a dozen years ago, was absolutely hysterical.

True story: I had just changed the air filter in my wife's Lexus LS-400 two weeks prior when I decided to take her car to the JiffyLube for an oil change since I can barely get to it because it is so low to the ground compared to my Jeep. Guess what... their "tech" came into the waiting area to tell me her air filter was completely clogged and so dirty that it needed to be changed immediately. I sensed some fun was about to happen so I jumped up and grinned as I walked past him over his objections to go out into the service area. I told him to show me the air filter and he couldn't even figure out how to open the air filter box. It was still dusty so I knew he hadn't touched it. By then, the manager was there and I proceeded to remove the air filter and show them it was virtually brand-new and not "clogged" as their tech claimed it was. I was ROYALLY PISSED by now at their obvious attempt to rip me off.

I got the oil change and filter free that day and I have never been back to a Jiffy Lube.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 12-08-2010, 02:15 PM   #22
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
The 3000 mile interval wasn't dreamed up by Jiffy or anyone else. In the 40's and 50's the recommended interval was 1500 to 2000 miles. Simply look at an owner's manual from those days to verify that.
In those days 1500 miles was a long ways - most cars were driven on shorter trips. The oil sludged up easier, and PCV systems weren't used - they keep the unburned gas fumes out of the oil, and engines ran much richer.
Detergent oils were a new idea, not common like today.

In the 60's the interval was still 2000 miles, toward the end of the 60's some recommended 3000. It's been getting bumped up ever since.

Now that engines use much better oil formulas (try to buy a non detergent oil,) they all use PCV systems of some kind, they run hotter - burning off pollutants - the engines run leaner, engine design is much more efficient as well as ignition systems, the interval has increased. And the extended interval is driven by advertising "my oil/filter/car lets you run longer than yours."

Jiffy and the others still suggest 3000 Miles - no doubt it's good for them, and it is certainly not harmful to an engine. Maybe a bit overkill.

The oils themselves do not wear out - some advertising leads you to believe oil will burn leaving carbon and deposits - if your engine runs that hot to burn or scortch the oil you are in trouble anyway, your engine is dying fast!

Changing the oil - and filter gets rid of the micro fine pollutants like carbon (what are diamonds made of?) and acids. No automotive filter can remove them.

The people at Jiffy and others hire kids that couldn't hold a job burning hamburgers. If you want to invest in a Quickie oil change place it's easy. They'll send you through their training school - you'll become an oil change expert and a tune-up expert. Plus they'll train you how to be a successful business man. It's amazing how they can do that - in one week! Then you train your employees.

Ask your parts house who buys lots of rethreading oil drain plugs.
rrich is offline   Quote Quick Reply
Old 12-19-2010, 01:21 AM   #23
Jeeper
 
Rampant21's Avatar
 
Join Date: Dec 2010
Location: Arlington Texas
Posts: 16
I tend to agree with Tomslusher, as the main advantage to synthetic is that it is slicker, and less subject to thermal breakdown. That being said, I still have not been able to overcome my resistance to shorter intervals. Maybe I spent too much time around the parts house... That being said, I have had an awful lot of cars, most of them already having high mileage, and no spun bearings.

Having said that, I do agree with meyers that there is something to the time you spend down there doing something for your jeep.

As an addendum, if you are really curious about what is going on inside your engine, you can buy a cutter and open up your filters (that is how I settled on Wix, after having looked inside a bunch of them and noticing the difference in filter media from one to another). Forgot what I paid for mine, purchased from Jegs, but they and Summit both sell them.
Rampant21 is offline   Quote Quick Reply
Old 12-19-2010, 08:21 PM   #24
Jeeper
 
Rubicon2's Avatar
 
Join Date: Nov 2010
Location: Northern Lower Michigan
Posts: 1,360
Just learned in my fuels and lubes class that most people change their oil way before it needs to be done. Even conventional oils are better than what they once were. Every 3000 is a waste of money. Most handle 5000 miles just fine and some synthetics can go till 7500 miles or more. Now based on driving conditions and your driving style will dictate some of these numbers. Extremely dusty, lots of short trips (especially in cold weather) and such will lower the oil change intervals. It also doesn't hurt to get your oil tested to see how your engine is faring. But by all means change it when you want to change it.
Rubicon2 is offline   Quote Quick Reply
Old 12-19-2010, 09:13 PM   #25
Jeeper
 
Join Date: Dec 2010
Posts: 73
I heard of a pump ya put in line of filter housing that ya turn on with key before starting that pressurized an keeps the initcial wear n tear down at start up, also heard of peps filtering the coolant what say u?

Mijztif 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Kendall GT-1 Synthetic Blend Oil - Is it Good? sach4u1 TJ General Discussion Forum 13 07-02-2012 08:27 PM
engine oil? Giancarlo TJ Tech Forum 10 09-08-2009 12:51 PM
First oil change should i go full synthetic? JKbrock TJ Tech Forum 9 01-08-2009 02:21 AM
Oil change interval question (free oil for life) tango3065 JK Tech Forum 5 01-01-2009 10:00 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:25 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