Re: Unleaded gas

Posted by dennis Nielsen On 2018/5/27 5:16:07
Hello All, from S. Africa.
Castrol, which is now part of BP' sell a product "Valve Master" for use with unleaded petrol. A word of warning about petrol containing alcohol, if you have a fuel pump fitted with an old type of diaphragm, i.e. not alcohol compatible, the alcohol will in time destroy the rubber of the diaphragm and these particles will end up blocking your carburetor.
I have had this experience with my 1938 '8'. As this car has its steering box on the RHS and right next to the fuel pump, removing said pump is not for the faint hearted. I was forced to remake the diaphragm using 3 layers of 0.5mm thick butyl rubber material which was imported from Australia.
Regards, Dennis

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