How long between oil changes? - Chevy and GMC Duramax Diesel Forum
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Old 05-07-2011, 07:22 AM   eBay Motors  #1 (permalink)
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How long between oil changes?

How long can I expect to get between oil changes in my 2011 using Mobil 1 Turbo Diesel Truck Full Synthetic. Yes, I know Amsoil is a little better, but I've been using Mobil 1 in everything I've owned with a motor since I was just a kid and have never had single oil related problem. Besides I'm to old and thick headed to change. Just wondering how long you guys and gals(I know there is a few) are going between changes?
Thanks Everyone :rockin
Rick
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Old 05-07-2011, 10:51 AM   eBay Motors  #2 (permalink)
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Now that the LML is using 9th injector after turbo for regen(no more oil dilutuion from previous regen done in cylinder on exhaust stroke,YAY) you can go 8000 miles between oil changes without a problem.
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Old 05-07-2011, 11:07 AM   eBay Motors  #3 (permalink)
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I use Valvoline extreme full syn. and I go by the oil life and it seems to be some where between 7000 and 8000 miles depending on driving
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Old 05-07-2011, 05:41 PM   eBay Motors  #4 (permalink)
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Quote:
Originally Posted by BIGWHEEL450 View Post
I use Valvoline extreme full syn. and I go by the oil life and it seems to be some where between 7000 and 8000 miles depending on driving
The Oil Life Monitor does not know what type of oil you are using. It makes its' recommendation based on how the truck is being used. (warm up /cool down cycles, engine loads, temps, speeds etc...)

I have 8000 miles (13000km) on current oil change and oil life monitor at 15% remaining - with factory fill oil.
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Old 05-07-2011, 06:44 PM   eBay Motors  #5 (permalink)
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i run shell rotella 5W40 syn last change by oil life was 9000miles. programing goes by cycles and conditions to determine useage. others that do testing have stated report comes back oil still good. as long as you use quality oil for diesel service(C rating) should be ok. my engine likes the 5W40 better than the 15W40, sounds like oil gets thru engine sooner in winter(iowa) use quality oil filter also, i have ran mobile1 and now use ac-delco, gm testing should have been done with ac-delco filter. thats why i use them.

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Old 05-08-2011, 01:22 PM   eBay Motors  #6 (permalink)
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I did not mean that the monitor knows what kind of oil I am using, I was just telling everyone what I use and how long I go between changes and how I judge it
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Old 05-08-2011, 08:42 PM   eBay Motors  #7 (permalink)
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I know synthetic is good but it would make me feel weird to wait over 5k to do an oil change
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Old 05-09-2011, 07:36 AM   eBay Motors  #8 (permalink)
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Thanks everyone for the responces. Sorry I didn't get back sooner, but mom's day weekend kept me hopping!
Mileage is kind of what I figured, in the 7 to 9 thousand range.
Thanks again,
Rick
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Old 05-09-2011, 08:34 AM   eBay Motors  #9 (permalink)
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I change every 8k, usually have about 20% life remaining according to the DIC. The dealer sneaked an oil change service package into the sale (my fault I didn't see it, I guess) so it's not costing me anything "extra" to have it done a little early.
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