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Old 12-07-2019, 12:49 PM   #14
Barry Polley
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Default Re: Duramax Allison issue

Quote:
Originally Posted by Mark Lewis View Post
Would the Trans Syn fluid be better in a 2001 1000 model Allison than the Dexron?
Yes! My 2003 has it. Smoother and less trans temp. Walmart is the best deal on approved Delvac Allison syn. I don’t use Castrol...
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