Oil recommendations - Club Cobra

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#5 (permalink)

06-14-2014, 07:02 AM

jhirasak

CC Member

Join Date: Feb 2012

Location: Redondo Beach, CA

Cobra Make, Engine: 331 SB, AFR heads

Posts: 75

Not Ranked

I second Bob's opinion. I am currently running 5W-30 Royal Purple and can maintain 25 psi at idle with the bearing clearances in my present engine. Normal pressure at cruise speed is 65 psi. Any higher oil viscosity would cause excessive oil pressure and strain on the oil pump and driveshaft.

John

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