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Unread 05-07-2009, 01:33 PM   #1
Skipsjh
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Oil change question

My wife drives an 08 Patriot. The oil change light came on around 2500miles the first time and just came at 5100 miles this time. That seems a little soon even if she's driving about 70/30 city/highway miles.

So 3 questions:
(1) Should I wait to change the oil until at least 3000miles?
(2) What should I keep receipts for to keep my Powertrain warranty in affect assuming I change my oil myself?
(3) What 5w-40 synthetic do you guys use for your Patriots/Compasses? What filter do you use? I'm thinking Mobil 1, but I only see Mobil 1 5w-40 for "Diesel applications" at Autozone.

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Unread 05-07-2009, 02:39 PM   #2
Elihawk
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I keep a log book in my glove box. Every other tank or so, I right down the gas mileage. Any service work, I write down who, where and what date. Anything I do myself, I record the date, the miles and the parts used (oil filter company, oil type etc).
I figure we have spent years developing synthetic oils, so it would be foolish not to use them. And if you use a good synthetic, you should be able to at least go 5,000 between oil changes! Experts/mechanics- correct me if I am wrong...
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Unread 05-07-2009, 02:40 PM   #3
miketmx
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I use synthetic Mobil 1 with 5w-20 weight like the manual recommends. These new engines have tight tolerances and a thinner oil is necessary for lubrication. The diesel engine oils like 5w-40 should not be used for these gasoline engines. I have my oil changed by a trusted local shop and I save the receipts. I change at 5k miles. I have reset the change oil light by following the owners manual when I knew it did not need a change.

Last edited by miketmx; 05-08-2009 at 09:37 AM..
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Unread 05-08-2009, 07:02 AM   #4
Skipsjh
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OK. I misremembered the oil type (5w-20) when I typed this out and searched online. That answers that question at least.

Thanks for the info. I'm going to wait until 5k miles for the oil change then.
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Unread 06-02-2009, 10:10 AM   #5
Elihawk
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My compass currently has 5W-30 synthetic in it- is that a problem I should fix, or just wait till the next oil change and then get the 5W-20 in it?
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Unread 06-02-2009, 10:55 AM   #6
Ridin' Around
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The Manual does call for 5w-20 in that application. Amsoil XL offers protection to 7500 miles.

My own opinion is to wait. That oil change monitor only looks at the driving pattern. It does not sample the oil in any way. I believe you can change the interval at which that alert comes on as well. It is not scientific in any way!

For the owner who has 5W-30, You can wait. The -30 doesn't hurt anything. Chrysler chose a 20 weight (lighter) oil to help with fuel economy.
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Unread 06-02-2009, 04:20 PM   #7
Gramps
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You'll be fine with 5W-30 until your next change. There is an addendum to the manual and a TSB for all of the export to use this weight. The only reason 5W-20 is used in N.A. is due to EPA standards on emissions control. The lighter oil lets the engine spin a little bit more freely. Probably not much but we have no control over the gov'ment.
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Unread 06-02-2009, 10:37 PM   #8
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What's the difference between the 5W-20 and 5W-30? I recall reading somewhere in the owner's manual that you can use either.
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Unread 06-03-2009, 03:58 AM   #9
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Quote:
Originally Posted by Beware View Post
What's the difference between the 5W-20 and 5W-30? I recall reading somewhere in the owner's manual that you can use either.
Yours is "Export" and you don't have to meet the EPA standards for the US so you can use either. The reason is in my previous post. It really is just that simple.
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