11-19-2010, 11:59 AM
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CC Member
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Join Date: Jul 2010
Location: Oakville,
Ct
Cobra Make, Engine: ERA with a 428 FE that runs on pump gas, but has plenty of power.
Posts: 65
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Not Ranked
My 427 cobra has a 428 FE engine, and my engine builder said that after 1,500 miles on the engine, it is OK to use synthetics.
Otherwise; if you use syn too soon, you would prevent the break in process.
I also heard much discussion about oils that contain zinc, to help the scoring of flat tappet camshafts in vintage engines.
Don
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