Gas Gauge

[Dead Parrot]

Depends on the gauge and sender combo. My original gauge(dual 20 tanks) read full until about 3 gallons was burned and reached empty with about 4 left. The full sweep of the gauge was responding to about 13 gallons of use. Replacement gauge changed that somewhat and the new sender in one tank is quicker to come off full and a bit slower to read empty. I have gotten pretty good at picking up the first signs of fuel starvation and switching tanks before the motor fully quits. Does mean that I have one tank about as empty as you can get one in normal use.

These tanks are fairly sensitive to if the nose is uphill or down when being filled. I have had an empty tank only take 18 gallons if the truck is pointed uphill and a bit over 21 if the nose is down.