I do know that my old 250 mm gauge would show 0% with 5 gallons remaining in the tank and my new 280 mm gauge will show 0% with 2 gallons remaining in the tank.
Dolph
Whilst up to speed on this issue I worked back from the VDO resistance data to calculate the fuel level at which the gauge will indicate 0% with the 280mm sender. Although only 17mm lower than the OE, not the hoped for 30mm, it does tie in very well with my findings and close to yours. It equates to around 3 litres more indicated fuel.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
