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Old 07-11-2001, 02:57 PM
TommyMB TommyMB is offline
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Join Date: Nov 1999
Location: Lynnwood, WA, USA
Posts: 178

10W-30 is too light for your climate unless is a a full synthetic oil. In that case it is good to about 90F ambient temp. I would immediately go back to 20W-50 from a major brand. Typically a heavier weight oil would reduce oil use and create more internal drag (less horsepower) so your discription is opposite to what it suppose to happen. Good luck.
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