can someone verify my math please.

Heres how i figure the mileage.
My tanks are dual 150's at 95% cap total fuel take on = 285gal.
I drive till the tanks are about 1/4tank or 1/8tank.
Take the total gals filled up full say 188.342gal. divide it by the total miles from previous fill say 1235miles and that will give you your mileage for that fillup. = 6.557mpg

this would be your formula on excel to figure it.

example: top bars a2 miles driven a3 - gals' used a4 - total mileage
sec row b2 - 1235 b3 - 188.342 b4 - (sum=b2/b3)

try that and see how it works out.

 

His problem wasn't with dividing the miles by the gallons.

His problem was he was dividing 4 fill-ups worth of miles by 3 fill-ups worth of gallons, which was causing an inaccurate result.

 

mndriver, dont look at the fuel additive as a way to get more mpg. if you get any , fine. look at them as a added lubricant to the ulsd.

it can only help from that standpoint, but you can do the same as we discussed in another thread with walmart 2 cycle outboard.

i have tried lucas, howes, powerservice, diesel kleen . i do just as well with the outboard oil.

if you are able to experiment with this on the company truck you are driving now run several different ones as a test, to see which ones shows the most improvement, before you buy a truck

 

Could you post your numbers or are you not ready to make a final call.

 

What kind of additive? They have several types.