dakdave wrote:
how are you determining 3/4 gal a week?
That's what I want to know, how does one determine the amount unless you pump it out and measure the amount each week..
To the OP its normal for some evaporation especially above 80 degrees, maybe the age has a factor with the gasket at top of tank where the pump goes, gasket wore/dryed out, dry rot on certain fuel lines etc will cause more evaporation, difficult to see some of these lines, even more difficult to see top of gas tank, also replace the old fuel cap, those also over time will loose there seal.
