Quote:
Originally Posted by herr_oberst
Do you plumb that into the fuel line or do you pump the fuel into the tank from a hand pump? I never knew they existed.
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Neither . The auxiliary fuel tank has a ball valve mounted on one end at the bottom of the tank . That ball valve has a 3/8 barbed fitting . You run a 3/8 ID fuel hose from that valve to the OEM tanks filler neck . I have to buy the kit for the filler neck it's about 25 bucks .
So as an example my OEM tank is at 1/4 . You open the ball valve and gravity does its thing . Not super fast but it doesn't have to be . Close the ball valve when the original tank is full or whenever you want . My 2001 is ancient technology so gravity feed works . At some point newer trucks crossed the complexity line and pumps are needed . I like the simplicity of the gravity feed .