[VAC] Re: '66 Ford F-250

["Harvey Barlow" <harveybarlow@xxxxxxxxxxxxx>]

Bob,

On the older non-fuel injected engines the engine's mechanically driven fuel
pump will pick up fuel from the selected tank and pressurize the carburetor.
As you discovered, few if any of the auxiliary tank equipped older pickups
had a gauge to read the content of the aux tanks.  The normal and
recommended method for use is to fill all three, begin using fuel from the
driver's side tank (if the truck is occupied by driver only), then use the
opposite saddle tank, then finally, the main tank which has a gauge.  Most
drivers would simply use a saddle tank until the truck "ran out of gas",
shift over quickly, and empty the second saddle tank.  If you learn to shift
tanks before the tank is dry by estimating fuel used the changeover will go
more smoothly without running out of gas temporarily each time you shift
tanks.

Harvey