Thread: Oil Viscosity? What's Best
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Old 10-23-2002, 12:20 PM
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Jeff Frigo Jeff Frigo is offline
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Cobra Make, Engine: ERA 454 S.O.
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Stick with what the manufaturer or builder says. Bearing clearances are different from engine to engine. After you break your engine in (around 1,000 miles), you can change to a synthetic if you want. Will pick up 10-15 hp.
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“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”

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