Synpower oil treatment

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Oct 11, 2002
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Just bought 2 bottles of this stuff. Checkout cutie gave me "the look"; the "you're buying oil additives you schmuck" look. Oh well; this stuff is like molasses in Alaska! Has anyone run it during the winter? Also, does it substantially quiet your engines?
 
I used a whole bottle last winter with five quarts 5W-30 here in the Detroit area. It was in a newer vehicle - so I can't help you with your engine chatter questions.

This is good stuff.. you will like it. On your next OCI in the spring or summer perhaps, reduce it to a half-bottle.
 
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