Castrol Syntec Blend 10w-40. Mobil Drive Clean 10w-30 & 10w-40. Also has some SuperTech 10w-30 in there. Basically whatever I had lying around. OCI of 4100 miles. Blackstone gave good reviews & said take it to 5500. I am on to M1 0w-40 now though.
94 Regal 3800 * Castrol SB,Mobil DC 10w-30/40 * 4100 miles
- Thread starter BatmanLS1
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Great report from a great engine. You could go waaaaay longer (Obviously)
Good report! Makes me feel better about tossing a bunch of oils in the crankcase! Additive clash...WHAT additive clash?
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