and there lies the problem which is why--rule of thumb--at least as long as I have been around has been 8--better to slighty overestimate--since its my understanding these are questions from inexperienced people....since those of us who have done this forever--have too many bad habits already---LMAO
Don't ever take a job pulling a cow pot, hopper, tank, or rock bucket. Don't take a job that pays by the barrel, head, or ton, if you're worried about being overweight.
Hahaha! If your fuel weighs 8 to 8.33 lbs/gallon, I'd start getting fuel somewhere else, C'moooooooon!