Question about 1985 Chevrolet Sportvan G30
You CANNOT use unleaded fuel in an engine made for UNleaded fuel.
It ruins the valve seats as there is no lead in the unleaded to lubricate the seats.
It can be converted to hardened valve seats so it can use unleaded gas but in the meantime - you need to get some lead additive and add it every time you put gas in.
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Posted on Jul 28, 2009
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Posted on Jan 02, 2017
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