6,000 miles before oil change on new engine - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

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post #1 of 18 (permalink) Old 07-23-2008, 09:59 PM Thread Starter
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6,000 miles before oil change on new engine

I have the 4.7L. According to the book and the service tech at the dealership I don't need to change the oil for 6,000 miles. It's new and had 3 miles on the speedometer when I bought it. Is everyone going that long before changing oil? Guess I'm old fashioned but I always changed oil at 3,000 miles and at 1,000 miles for the first change on a new engine. I've always changed my own oil as I never trust them to use the proper oil or filter unless I'm under there watching them which they discourage. Also is everyone using 5wx20 in the 4.7L? I've always used Valvoline oil in other vehicle. I've use Valvoline premium and have never used synthetics. What oil filter are you using? I use Mobil 1 on my XJ's and assume they make one for the Commander. I've only taken a cursory look under the hood and didn't see the oil filter but I'm sure I'll find it if I look a little harder. Is it accessible from the top or do you have to crawl under?
I love this beast. It rides and handles like a dream. I've had my XJ's parked for 2 weeks and take the Commander everywhere. I have the Red Rock Pearl and Rocky Mountain Edition. It also matches or beats the MPG in my Cherokees. Getting 21.3MPG on the highway. I have about 1,100 on the clock and zero complaints so far.
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post #2 of 18 (permalink) Old 07-23-2008, 11:19 PM
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******THIS IS FOR THE HEMI AND WILL DIFFER FROM YOURS!**************** I use Mobil 1 5-w20 full synthetic, and i BELIEVE AN m-204 FILTER. They are great and are way ahead in performance of conventional crap. The access to the filter is dumb ass and bottom only and there is a little channel that is fabricated to let the oil pour down, I refer to it as the dumb ass spot. No offense to the vertically challenged, but unless you are a midget with tiny hands it is very unlikely that you can get any leverage barehanded to get the filter off. Get a filter wrench as it will save you tons of time and anger. I change mine every 5k. Hope this gives you a good idea of what you are up against. Mobile's site

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post #3 of 18 (permalink) Old 07-24-2008, 07:40 AM
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6,000 only if you're using synthetic. Otherwise, 3,000.

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post #4 of 18 (permalink) Old 07-24-2008, 08:36 AM
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There is a total thread on Synthetic oil and alot of us are running Mobile1....
But a general consensus is that you can go 5-6k with synthetic, otherwise stick to the 3k schedule...

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post #5 of 18 (permalink) Old 07-24-2008, 09:25 AM
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I go 5k on Mobil1 5W30, do my own changes so it doesn't end up in the tech's car "by mistake".

BTW, how are you getting 21 MPG with a 4.7? I'm guessing its something to do with the newer 4.7.

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post #6 of 18 (permalink) Old 07-24-2008, 11:46 AM
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Quote:
Originally Posted by rwmorrisonjr
BTW, how are you getting 21 MPG with a 4.7? I'm guessing its something to do with the newer 4.7.

I get 19-20 on highway with the 4.7, but thats driving slow. So, usually a lot less.

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post #7 of 18 (permalink) Old 07-24-2008, 12:03 PM
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LOL. Same here, then I'm lifted and running ~32" tires with a Phunkeydude roof rack, so that might be part of the problem.

2006 XK Sport, 4.7l, QTII- many mods
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post #8 of 18 (permalink) Old 07-24-2008, 04:47 PM Thread Starter
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Quote:
Originally Posted by rwmorrisonjr
I go 5k on Mobil1 5W30, do my own changes so it doesn't end up in the tech's car "by mistake".

BTW, how are you getting 21 MPG with a 4.7? I'm guessing its something to do with the newer 4.7.
I have no idea how I'm getting 21MPG, that's what the MPG gauge says driving with the cruise at 65MPH.

I noticed you are using 5w30. The manual calls for 5w20. What's the difference and is 5w30 better to use?
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post #9 of 18 (permalink) Old 07-24-2008, 05:30 PM
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Quote:
Originally Posted by howard6081
I have no idea how I'm getting 21MPG, that's what the MPG gauge says driving with the cruise at 65MPH.

I noticed you are using 5w30. The manual calls for 5w20. What's the difference and is 5w30 better to use?
You can get the MPG in the dash to read anything if you try. But that is only the mpg you are getting at the moment, not your overall mpg for a tank of gas.

Only the 5.7 HEMI with MDS has to run 5W20 oil. If it does not get 5W20 the MDS will not operate properly.

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post #10 of 18 (permalink) Old 07-24-2008, 07:12 PM
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I agree that you can do extended oil changes with synthetic oil, but you do not want to use synthetic until the engine is broken in because you nead the parts to all seat and match up for long term better gas mileage. I would not change to synthetic until the third change, (around 4 or 5 thousand miles) and I would change it first at 1,000 miles to get rid of the small metal bits and junk that is generated by breaking in the motor. That is just my opnion based on what seems logical to me.

2007 Jeep Green Limited 4.7 Flex Fuel, RR 2.5" 4 inch Superlift coils on rear, 1.5" Spacers, Bridgestone 265/70/17, K&N CAI, Flowmaster, Diamond Plate Locking Trunk, Blue Ox Baseplate w/D-rings, "Get Lost 4X4" Front Bumper, T-Max 9000 winch, "Get Lost rear tire carrier, 30 gal second gas tank.
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Last edited by HueyPilotVN; 07-24-2008 at 07:14 PM.
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