Thread: Which oil do you use
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Old 04-18-2016   #143
BigJohn
 
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Join Date: Feb 2012
Location: Ledyard,CT
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Default Re: Which oil do you use
Quote:
Originally Posted by Mystic ZR-1 View Post
Why is 10w40 so popular?
GM said 10w30.
Ya know, they're really smarter than we give
them credit for...
15w50
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