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DavidG · 06-21-2020, 06:53 AM

Sheldon,

Through the '35s, the tanks were vented via the fuel gauge unit in the top of the tank and the cap was un-vented. With an un-vented cap whose sealing gasket is in good condition, gas cannot leak out through the filler pipe. Originally, there was a un-vented locking cap for the '35s and a different vented locking cap for '36s+. Sounds like Bob copied the latter design. Ford did not offer a locking gas cap prior to the '35 model year.

06-21-2020, 06:53 AM	#8
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,123	Re: Drakes Locking Gas Cap Sheldon, Through the '35s, the tanks were vented via the fuel gauge unit in the top of the tank and the cap was un-vented. With an un-vented cap whose sealing gasket is in good condition, gas cannot leak out through the filler pipe. Originally, there was a un-vented locking cap for the '35s and a different vented locking cap for '36s+. Sounds like Bob copied the latter design. Ford did not offer a locking gas cap prior to the '35 model year.