Thread: Backdraft book says use 20w50 oil
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Old 07-23-2014, 07:31 PM
eedeutsch eedeutsch is offline
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Join Date: Aug 2012
Location: Louisville, KY
Cobra Make, Engine: Backdraft Racing 427 SC
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Default Engine oil
My engine builder recommended 20w50 in summer and 10w40 in winter. He did
not specify any particular brand.
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