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Old 10-25-2004, 08:14 PM
Dennis Kelley Dennis Kelley is offline
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Join Date: Jan 2004
Cobra Make, Engine: BDR 302 AFR 165
Posts: 363
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I use conventional Castrol 10W30 as recommended by the machine shop and my father. I change the oil every 1000 miles so its not realistic to use synthetic. If I was going to road race this engine in high temp and extreme condition I would probably use synthetic. My Wife's car and my every day drive get mobil 1 synthetic just because I change it every 6000 miles. If your motor runs good on Royal Purple and doesn't burn oil I wouldn't change it but thats just my opinion.
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