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Old 08-13-2012, 07:26 PM   #1
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Oil changes

New Jeep owner...oil changes some suggest 3k...others 5k...thoughts?

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Old 08-13-2012, 07:53 PM   #2
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Oil is cheap compaired to replacing a motor. I do mine every 5000 kms, which i do believe is about 3000 miles.

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Old 08-13-2012, 08:07 PM   #3
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Hmmm, I was thinking about the 3K/5K thing myself today. Maybe it needs to be 4k. Swipe the dipstick past your index finger and thumb, observe the color, aroma and feel. Check your bank account and energy level and sit back and put it off another day maybe . . .
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Old 08-14-2012, 07:41 AM   #4
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I've always used Mobil 5000 10/30 in my TJ, my old Cherokee, and my wife car . I change mine every 4 months since I don't accumulate a lot of miles on the jeep... however, wifes car is driven more so I do it at 4000 miles,even though oil says good for 5, that was a tough change for me since I'm an old school 3000 miles or 3 months guy. They say oils have changed a lot since I did my first oil change around 40 years ago, better refined, different additives, ect. However, dirty or extreme dusty conditions I'd do it every 1800 to 2000 miles...once again, just my thinking...
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Old 08-15-2012, 10:29 PM   #5
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I just go by the manual's severe service recommendation.
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Old 09-14-2012, 04:18 AM   #6
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i use 100% synthetic and my change is every 8500
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Old 09-14-2012, 11:39 AM   #7
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My owners manual specifies 8k mile service intervals which in my opinion is way too long. That is merely my opinion, I don't have the data to back that up like I am sure the OEM does. I changed mine when I first purchased it at 3200 miles. I now change it at 4k mile intervals and I am currently using full synthetic oil. I am running Valvoline SynPower 5W-30 oil and NAPA Platinum oil filters.

I am sure I am changing my oil a little prematurely based on OEM recommendations but I feel I am pushing it a little harder than some because of the off-roading at high ambient temperatures and slow speeds as well as how heavy it is. Again, just my opinion and oil is relatively inexpensive.

Oil debates are as old as the Chevy vs. Ford vs. Dodge debates and I am sure they will continue. The vehicles that I see with issues due to oil are very few and far between these days. The last several that have had any kind of issues are ones that have not been serviced in a very long time and it is obvious that they have been neglected by the owners.

I would suggest you pick a mileage based on your driving habits/conditions and go with it as long as it does NOT exceed the OEM recommendations.

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Old 09-14-2012, 02:59 PM   #8
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^^^ Yeah, maybe sooner than needed, but it's probably smart. Most dirt that collects in oil that causes wear is too small for most oil filters. They catch some of it--like your synthetic media filter probably does as good of a job as can be done with dirt, in all practicality, but the rest goes out with the old oil.
Probably why there is a Synpower 300K mile engine guarantee if you change every 4K miles. I know, a lot of these guarantees are marketing playing the odds, but it seems like Valvoline's version is the most liberal of them.
I like their oil. Synpower tends to turn in low wear numbers....maybe the lowest average...on the many used oil analyses that I've seen for any off-the-shelf motor oil in the US.
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Old 09-14-2012, 03:12 PM   #9
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Based on my driving I've always changed at 5000 using good ole dino oil. Easy to remember when to do it just by looking at odometer.
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Old 09-14-2012, 03:44 PM   #10
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Do some research into different types of oil, and how they perform in particular settings. Make your decision on which best performs at the conditions you see most often, while remaining an affordable option.

Toyota notoriously set the operating temp of the 99-03 model year 3.0v6 too high, leading to a sludge SSC for motor rebuilds within 120,000/10yr (while they were 3/36k warranty). Vehicles can make a difference. Run synthetic in that motor, it has no parrifin (the stuff candles are made from) which is why conventional and hybrids sludge. BUT synthetic oil degrades some seals faster, or more acurately is a sneakier oil, meaning youll be replacing valve stem seals. Which is better? Up to you.

My two shillings.

Fwiw, I run mobil1 fullsyn every 7500.
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Old 09-14-2012, 08:44 PM   #11
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What mileage for the FIRST oil change?

Synthetic oil better? What are recommendations?

What oil is in it when you buy it?

Are there any negatives to changing the oil yourself as far as warranty and resale?
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Old 09-14-2012, 09:28 PM   #12
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^^^I have had some engines seep a little when running synthetic. Usually not though.
Quote:
Originally Posted by My2Jeeps View Post
What mileage for the FIRST oil change?
That's a hard one. I was told it's a good idea to change the factory oil at somewhere between 1000 and 2000 miles, unless the manual says not to. Honda (some or all?) uses a special break-in oil with loads of moly and specifically says to leave it in for the full first oil change. The more I think about it, the more I am going with the manual and will do maybe 3000 for the first one unless otherwise specified, if and when I get a new vehicle.

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Synthetic oil better? What are recommendations?
Mostly in cold pumpability and high temperature stability. I prefer Valvoline or Pennzoil for off-the-shelf or Amsoil for special oil. This is a matter of preference only. Just don't get some weird cheapo store brand. (I think NAPA is OK, but maybe not quicky-mart.)

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What oil is in it when you buy it?
No clue what Jeep uses.

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Originally Posted by My2Jeeps View Post
Are there any negatives to changing the oil yourself as far as warranty and resale?
Not if you keep records and all reciepts there shouldn't be--unless you mess it up. I don't trust lube places. Even dealers can put the techs in such a rush its hard to do a good job.
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Old 09-14-2012, 09:49 PM   #13
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Are there any issues in changing from conventional oil to synthetic?
I ask because I may buy a used vehicle that has run conventional since new.
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Old 09-15-2012, 03:20 AM   #14
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i know of no problems going from regular oil to synthetic.they tell me that once you go to synthetic you can not go back to regular oil.the oil change interval for 100% synthetic can go a great deal longer
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Old 09-15-2012, 06:56 AM   #15
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I am not aware of any API approved synthetic motor oil that is in any way incompatible with conventional. These are still just oils, not weird substitute chemicals for motor oils...just better oils. I've switched randomly between the two in the same engines all my life.
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Old 09-15-2012, 10:01 AM   #16
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I have noticed that when changing to synthetic the first oil change can sometimes "shock" the motor, causing about a quart to diasappear. It is most common in German engines, though, for whatever reason.
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Old 09-15-2012, 02:14 PM   #17
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Quote:
Originally Posted by My2Jeeps View Post
What mileage for the FIRST oil change?

I would change the factory fill within the first 1000 miles. When I build a new engine I change the oil after the first 20-minute break-in period, then again at 100 miles, then again at 500 miles and then recommend 3k miles from then with petroleum based oils. I also run petroleum based oils for the first 3500 miles for adequate break-in and then you can switch to synthetics if you choose.

Synthetic oil better? What are recommendations?

Better is somewhat subjective. When the manufacturers engineer/design a new engine they determine which oil "specification" it will require. Then oil manufacturers match an oil that they already produce to that specification or come up with a new oil and that oil will generally supersede its' previous one. Petroleum based oils as well as synthetic based oils still have to meet that oil specification. So they will both perform up to expectations of the oil specification.

That said, a synthetic oil will generally hold its viscosity index better and usually contains a better additive package from the oil manufacturer so they are a little better oil but that comes at a higher price as well. Many people use synthetics mainly so they can extend their service intervals, although I am not a fan of extended intervals. For the most part I run petroleum based oils in most of my vehicles because they are serviced religiously and well within the OEM recommendations. They reason I run synthetic oil in my Jeep is because in my opinion it is used under some fairly harsh environments compared to my other vehicles. Slow moving when off-roading with high ambient temperatures and extremely high under hood temperatures are the biggies.

What oil is in it when you buy it?

I do not know the answer to that so I will not speculate. I have heard they leave the factory with petroleum based oils for break-in but cannot confirm that.

Are there any negatives to changing the oil yourself as far as warranty and resale?

No, however, keep accurate records and receipts just in case there is ever an issue. Even then you may get a dealership to fight it but with documentation I think you will be fine.


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Are there any issues in changing from conventional oil to synthetic?

No, I would drain the oil with the engine slightly warm to get as much out as possible as it will flow a little better.

I ask because I may buy a used vehicle that has run conventional since new.

No problem switching it over to synthetic if you choose.
I hope that helped.

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Old 09-15-2012, 02:29 PM   #18
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Thanks for your insight Mike.
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Old 09-15-2012, 02:53 PM   #19
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I know that no one here is touting the 3k oil change, but basically there is no reason to change more often than the owner's manual says

A quote from Edmunds.,com

Oil chemistry and engine technology have evolved tremendously in recent years, but you'd never know it from the quick-change behavior of American car owners. Driven by an outdated 3,000-mile oil change commandment, they are unnecessarily spending millions of dollars and spilling an ocean of contaminated waste oil.
Although the average car's oil change interval is around 7,800 miles — and as high as 20,000 miles in some cars — this wasteful cycle continues largely because the automotive service industry, while fully aware of the technological advances, continues to preach the 3,000-mile gospel as a way to keep the service bays busy. As a result, even the most cautious owners are dumping their engine oil twice as often as their service manuals recommend.

Quote from Autos-AOL.com

Now more than ever before, vehicle engines operate at high heat and close tolerances. The reason for this is the Federal Emissions mandates the government has imposed on the carmakers. Vehicles have to emit a smidgeon of the tailpipe emissions they did a decade ago. Carmakers have risen to this occasion by increasing combustion chamber temps with higher compression engines, running leaner fuel systems, adjusting ignition timing for optimum emissions, narrowing cooling system water jackets, and tightening engine oil tolerances. All this makes for hotter running engines that emit less tailpipe emissions. Putting these demands on engines requires a lubricant that can stand up to this harsh environment. Hence, petroleum companies' work hand in hand with carmakers to develop engine lubricants to meet the requirements and demands of a particular powerplant, still delivering the advertised horsepower and torque output that consumers expect. Research and development between carmakers and petroleum companies has resulted in improved engine lubricants that properly lubricate your vehicle's engine as well as keep the inside clean of sludge buildup, AND CAN GO LONGER BETWEEN OIL CHANGES!


The longer oil life can save money. There are estimates that drivers would save $600 over a five-year period by going from 5,000 miles to 7,500 between oil changes.
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Old 09-15-2012, 03:11 PM   #20
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Quote:
Originally Posted by BlueRidgeYJ View Post
I have noticed that when changing to synthetic the first oil change can sometimes "shock" the motor, causing about a quart to diasappear. It is most common in German engines, though, for whatever reason.
That typically happens when the synthetic is dissolving the gum under the rings. They can lose seal and burn oil for the first few thousand miles. It usually goes away pretty soon. A really old engine possibly may not, and may leak from the seals after the varnish and stuff is dissolved though.
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Old 09-16-2012, 10:51 AM   #21
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Quote:
Originally Posted by Beastmaster View Post
I know that no one here is touting the 3k oil change, but basically there is no reason to change more often than the owner's manual says

A quote from Edmunds.,com

Oil chemistry and engine technology have evolved tremendously in recent years, but you'd never know it from the quick-change behavior of American car owners. Driven by an outdated 3,000-mile oil change commandment, they are unnecessarily spending millions of dollars and spilling an ocean of contaminated waste oil.
Although the average car's oil change interval is around 7,800 miles — and as high as 20,000 miles in some cars — this wasteful cycle continues largely because the automotive service industry, while fully aware of the technological advances, continues to preach the 3,000-mile gospel as a way to keep the service bays busy. As a result, even the most cautious owners are dumping their engine oil twice as often as their service manuals recommend.

Quote from Autos-AOL.com

Now more than ever before, vehicle engines operate at high heat and close tolerances. The reason for this is the Federal Emissions mandates the government has imposed on the carmakers. Vehicles have to emit a smidgeon of the tailpipe emissions they did a decade ago. Carmakers have risen to this occasion by increasing combustion chamber temps with higher compression engines, running leaner fuel systems, adjusting ignition timing for optimum emissions, narrowing cooling system water jackets, and tightening engine oil tolerances. All this makes for hotter running engines that emit less tailpipe emissions. Putting these demands on engines requires a lubricant that can stand up to this harsh environment. Hence, petroleum companies' work hand in hand with carmakers to develop engine lubricants to meet the requirements and demands of a particular powerplant, still delivering the advertised horsepower and torque output that consumers expect. Research and development between carmakers and petroleum companies has resulted in improved engine lubricants that properly lubricate your vehicle's engine as well as keep the inside clean of sludge buildup, AND CAN GO LONGER BETWEEN OIL CHANGES!


The longer oil life can save money. There are estimates that drivers would save $600 over a five-year period by going from 5,000 miles to 7,500 between oil changes.
I agree with both of these statements, however, I still see some oil related issues (very rare) due to people going too far to the other side (extended service intervals). Although not as common as changing the oil @ 3k mile mentality there is a happy medium.

This is why I stated do not exceed the OEM recommendations but anything sooner that that is not going to harm anything. Some people just have a gut feeling about changing at 3k miles. Ultimately it is the vehicle owners decision and effects their pocket book.

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Old 09-16-2012, 01:17 PM   #22
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Thank you to all for the wealth of information...I am going to go for a change at 4k and try a synthetic...again much thanks!
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Old 09-17-2012, 10:06 AM   #23
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From the 2013 users guide:

Quote:
Based on engine operation conditions, the oil change indicator message will
illuminate. This means that service is required for your vehicle. Operating conditions
such as frequent short-trips, trailer tow, extremely hot or cold ambient temperatures,
and E85 fuel usage will influence when the “Change Oil” or “Oil Change Required”
message is displayed. Severe Operating Conditions can cause the change oil
message to illuminate as early as 3,500 miles (5,600 km) since last reset. Have your
vehicle serviced as soon as possible, within the next 500 miles (805 km).

...

NOTE:
Under no circumstances should oil change intervals exceed 10,000 miles
(16,000 km) or twelve months, whichever comes first.
I usually stick with 5000. Easy to remember when you get to 5k, 10k, 15k etc and you don't have to have that sticker in your window to remind you.
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Old 10-03-2012, 12:15 AM   #24
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Go with what the oil change indicator indicates. Don' t sweat the one year warning. Granny left hers in for four years - no problem! You can search the net for the Granny Test. It is out there somewhere.
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Old 10-03-2012, 08:11 AM   #25
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Quote:
Originally Posted by zmotorsports View Post
...This is why I stated do not exceed the OEM recommendations but anything sooner that that is not going to harm anything. Some people just have a gut feeling about changing at 3k miles. Ultimately it is the vehicle owners decision and effects their pocket book.

Mike.
I was surprised that my owner's manual ('02, 4 liter) said to change at 3K miles or 3 months, whichever comes first, under "severe" driving conditions....which seems to include just about every normal driving style.
(But then, I was a little surprised it recommended 10W-30 for most usage, too. Most engines by '02 had recommended 5W-30 year round, as far as I know.)

It seems a little soon to me for not towing anything or hard-core offroading. Not being under warranty, I went ahead and made my next oil service tag for 5K or 5 months. Modern oil is pretty good, but I wouldn't do that under warranty or if I were beating on the engine regularly.
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Old 10-03-2012, 08:20 AM   #26
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Pat@fieldsauto taught me how to turn off the oil change indicator(should be in the manual) he said"Turn the key to the ON position and pump the gas pedal three times in 10 seconds. Make sure gas pedal goes to the floor. Turn it off and restart"
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Old 10-05-2012, 07:33 PM   #27
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Does my new 2013 Wrangler have the automatic oil change indicator? Can you review the % of life left?

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