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Old 12-07-2019, 05:22 PM   #15
monte385
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Join Date: Oct 2015
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Default Re: Duramax Allison issue

Quote:
Originally Posted by Barry Polley View Post
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...
Summit's price was the best I found, never checked Wallmart.
Yes trans shifts smoother & runs cooler.
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