Binky,
Just a random question (and maybe a suggestion). Why do you fill your tank every 2-4 days with anywhere from 2-6 gallons? Are you just testing mods with quick tanks over a few days or is your vehicle tank very small?
Your fuel log is pretty up and down since you started keeping track which is probably a result of weather/road conditions for you over the brief 2-7 day window before you refuel. If you are able to stretch your tank beyond a week or maybe closer to 300+ miles you might get a better idea of how your vehicle is operating in relation to mpg. With just a small tank sample each time before you fill up you're really depending alot on weather and road conditions to provide info. for you on each tank.
Unless you are doing alot of A-B-A testing with mods you might want to stretch your tanks further (without ending up dry on the side of the road) so you get a more accurate example of an average tank. Just a suggestion!
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