Summer gasoline mix change?

My neighbor ('53 MG) said that with the summertime fuel mix change, I should put lead additive in my gas tank, any reason why?  TIA - Pat

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Permalink Reply by Mark on July 9, 2011 at 3:45am
Old engines, like a 53 MG, were designed to run on leaded gas.  If I remember right it had to do with the valves and or valve seats and without the lead in the fuel it wasnt' good for the valves/seats.  When the engine is rebuilt there was an optional upgrade for the valves to a stelite coated valve that negates the need for the lead in the fuel.   I don't know why you would only use it during the summer though.

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