Re: Carbon Buildup and Stuck Valves
Quote:
Originally Posted by Charon
My goodness child! Go look at the shear. Pressure ratings. All the specs on oil from 1960. Then compare to today's oil. No comparison. Sadly I think I just found kindergarten again.
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Uh huh. Like I had mentioned already....zinc was added for a reason. And now taken away again because new engines have roller cams and rockers. But you didn't answer my question as to why oil companies like Amsoil for instance recommend zinc oil for flat tappet engines. It's still them against yourself.
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"Excuse the rust I use my truck"
1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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1964 Chevy C20 292/SM420
1966 Chevy C10 292 hotrod 6/TKO600
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