[monster76]

hello every one currently i have a 99 f350 4x4 with a 7.3, it has 4.10 gears open dif front rear automatic built with a 1200 rpm stall, 4" turbo back and a ts performance chip and i run amsoil in everything diff trans and engine. i understand this is a heavy truck currently i drive it real easy try not to go over 65 especially if i am pulling. i own a small company in Miami where i mainly do weld repairs and hydraulic work on industrial equipment. my truck has my compressor welder and alot of tools . when i first got the truck with all my tools i was only getting about 10 mpg, then i put exhaust and chip and still only averaged about 11 mixed driving. Then my trans went out and i built with a very low stall 1200 rpm and upgraded the valve body with a nice shift kit and bam i started avg about 14 which led me to believe it was just efficient before at putting the power to the wheels. now my question is what can i do to get about 16 mpg. currently i am getting about 430 miles to a tank where i would like to be around 480, 500, i drive about 600 miles a week some times more and every little bit counts especially with the rising cost of everything now a days. btw i purchase the bio already made from a company locally here who gets it from a refinery since i dont have time to make it. sorry for the long post every body