Have you considered Mobil One synthetic? I'm training to be a Mercedes tech, and that's all we use. We have cars that go 20,000 miles on regular Mobil One synthetic. It's less resistant to breakdown that regular oils. Granted it's more expensive, and if you change your oil every 3,000 miles then regular oil should be fine. Everyone has their own personal preferences, and stories. Good luck with the engine. John
'68 C-10 - 250 with Edelbrock 600cfm 4 barrel, Offy intake, Hedman headers and true duals, HEI, MSD 6A box, relocated gas tank
Soon to have: T-5 tranny
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