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Old 12-18-2000, 11:57 PM   #14
P.K. Motorsports
Scooby Specialist
Member#: 1110
Join Date: Mar 2000
Location: USA
1999 RS


8 - please try 5w-30 Castrol Syntec. I recently had a lot of nasty noise coming from my engine with Valvoline Syn-power 5w-40 and switched to the Castrol. The problem had been evident at temperatures as warm as 50F, but it resolved completely with the introduction of the Castrol, even in the thirties (as cold as it gets here in the Bay Area). I have a theory that something about the Syntec quiets the engine, but I need to hear it from more people to be sure.
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