Oil Change Service soon (need advice!) - JeepForum.com

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post #1 of 3 Old 09-26-2002, 01:10 PM Thread Starter
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Oil Change Service soon (need advice!)


There are a couple hundreds miles left before I'll go with my first oil change service for my '02 GC Special Edition. I prefer to go with the fully synthetic oil such as Mobil-1 SuperSyn or Royal Purple (I did not decide yet which brand will I use), and will probably go with K&N Performance Gold Oil Filter (but oil filter is not a big issue to me now). So, I have a few questions and I would appreciate any of your opinions and/or suggestions.

1. If some of you using fully synthetic engine oil, what brand would you recommend and what viscosity grade would be appropriate if I currently live in Northeast region of the US?

2. How your engine behaves with the synthetic oil? Did you feel any differences when you switched from conventional mineral oil to synthetic one? Did your engine became more quieter and running smoothly?

3. Can you note any dramatic changes with fuel consumption? Do you feel any fuel economy improvements?

4. Will my Jeep dealer provide me with the oil change service if I'll bring them my own oil (with approved and recommended API and viscosity grades)? If yes, can I trust them? I mean - can I be sure that they will definitely put in my own oil?

Thank you very much in advance for your responses!

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post #2 of 3 Old 09-26-2002, 04:26 PM
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I ran synthetics in my 2000 WJ I6 for about 1 year. Didn't notice any appreciable difference in performance, or mileage.

You do however get a boost in mileage between intervals, so its safer to stretch out oil changes a few thousand more miles. If the book says 5k, you can get 7k.

You have a couple of options in your climate zone. If its severe cold, run something like Mobil1 5w-30w, or the 10w-30w. I ran the 10-30w in Michigan thru the winter months. There is a section in your owners manual with a temperature range chart that shows what you can safely run.

Call your dealer and ask them if they will use owner provided products. They may balk at it, and charge you an ridiculus labor rate. If they give you a tough time, take it somewhere else.

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post #3 of 3 Old 09-27-2002, 12:17 PM Thread Starter
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Thank you SilverLimited for your response and thoughts.

Do you or anybody here know or heard anything about, or even used "Royal Purple Motor Oil"? What's your opinion on this product?
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