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Old 03-03-2014, 11:30 AM   #4
humfrz
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Quote:
Originally Posted by Carlitoz3 View Post
I was going to ask the same thing
Yep, it's good to leave a few molecules of the old oil in the crankcase to introduce the new oil molecules to the engine parts ..... so as they don't go into .... "hydrocarbon shock" .......

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