Duramax Diesels Forum Truck of the Week
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Old 07-25-2017, 10:56 AM
jeffbowles jeffbowles is offline
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Default Need some input . . .

Just purchased 2009 Chevy Dmax 6.6 with Allison transmission. I am new on the scene with diesel's. What brand of oil and weight of oil does everyone prefer to run in their dmax.

Diesels seem to be all about fluids and filters. What are the critical items. Any / all suggestions would be appreciated. I am 61 and enjoy taking good care of things. This is a stock truck as far as I know.

Tnx - Jeff
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Old 07-25-2017, 11:30 AM
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Do a search on here, plenty of oil threads.

That being said, just choose any 15w40 rated for a diesel.
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Old 07-26-2017, 06:39 AM
jeffbowles jeffbowles is offline
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Default Will do. Tnx

Will do. Tnx
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Old 07-26-2017, 10:36 AM
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Rotilla T6 5w40 here
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Old 07-26-2017, 10:57 AM
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Like PureHybrid said, any diesel oil that meets the ratings is fine. I run Delo 400 because it's usually cheap and why change now? But you won't go wrong with anything meeting the spec.

Sent from my S60 using Tapatalk
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Old 07-26-2017, 11:00 AM
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Quote:
Originally Posted by 2004LB7 View Post
Rotilla T6 5w40 here
Same in my duramax. Regular Dino rotella in my 6.2
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Old 07-26-2017, 11:08 AM
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I run devlac in the 2.5 gallon jug and mobil 1 filter from Walmart.
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Old 07-30-2017, 06:40 AM
jeffbowles jeffbowles is offline
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Many Thanks too all. Your comments / feedback are much appreciated.
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