Had the mechanical surveyor on the 55 I am buying tell me to run between the high and low marks on a 12-71. He said thats where they will usually wind up anyway as they will use oil until the halfway mark then quit. He said this was typical for Detroits. Guess I will try it and see.
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Thread: Oil changes
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10-13-2017 09:00 PM #12
Re: Oil changes