07-16-2014, 07:35 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Not Ranked
Depends on the engine installed. If the engine is built with loose tolerances in the bearings, you'll need the higher hot viscosity to maintain pressure.
But, you're right, 20W is pretty high for a new England winter. Red Line sells a 10-W50 oil. It's expensive, but could be just what you need.
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NASA Rocky Mountain TTU #42
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BDR #1642 - Supercharged Coyote, 6 speed Auto
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