03-30-2015, 06:22 PM
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CC Member
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Join Date: Dec 2003
Location: Gurnee,
IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
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Not Ranked
Quote:
Originally Posted by zrayr
I do use Mobil 1 0w-40 in the winter, resulting in zero difference in oil
Pressure vs. the Mobil 1 15w-50 the rest of the year
Z
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You might want to try Mobil 1 5w50 in the summer or we use Mobil 1 racing 0w50 in KMP259 all of the time, very high in ZDDP.
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Morris
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