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Old 07-15-2015, 04:20 PM   #1
Isaiah92260
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Location: Whittier, CA
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Re: Which grade oil should I use for my motor?

Quote:
Originally Posted by oldtrux View Post
15w40 is diesel oil,i would think it would take a while to get to the top end!i would think the factory called for 10w30,just my 2 cents worth though!
I heard the Rotella of good for older cars because of the zinc. It's like buying regular oil but with the zinc already in it. I suppose it won't be too bad depending on the grade.
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