Brad Penn. Local race shop carries it, nice and convenient.
I start with their 30w break in oil, and move on from there to 10-30 or 20-50 depending on the motor.
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1969 Firebird, Black w/Parchment Arizen interior, 383 Pontiac Stroker (350/428 crank), TKO600, Moser 12 bolt, 18" TTII's, Hotchkis, GW, DSE, Speed Tech, Vintage A/C, etc.
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