Just did my IFTA and did almost 25,000 this past quarter with an average of 5.8 MPG. I personally think this is the only way to get a true reading of what your real MPG figures are. Someone before said it's not and I would be interested in knowing why?

I'm not sure if I can attribute my gains in MPG to the APU I put on but for the last 2 quarters my fuel mileage has gone way up. I think I could have done much better but I seem to run the APU much more than I would normally idle my engine.

Not much to do on my truck other than fix a few things that could become a problem down the road. I've found that if you don't keep up with those little things they can amount to a huge job when you finally get around to fixing them.

I have a doctors appointment on Wed so I should be heading out after that. I'm ready NOW!!!! I have a feeling that with all the holidays over the roads will be jam packed with trucks towards the end of this week.

Considering you've already admitted that you aren't even using actual mileage readings, but rather are calculating out your mileage after the fact off computer readings, it's pretty clear that your MPG figures aren't correct. :roll:

The only way to get a true reading of your MPG figures is to record your actual mileage over a set period of time, and compare to the actual amount of fuel used. Since you aren't doing that, your figures are inaccurate (and more than likely high).

Maybe I'm wrong here but, when you do your ifta you still have fuel in your tanks that goes toward this quarter but you haven't used. That would throw your numbers off no?

I always fill up my tanks when I get home and I also use my odometer for exact mileage readings so my MPG figures are correct. Too bad Rev, wrong again!!! lol

:roll:

Works for me.........

I think what Steve is saying is that he fills his tanks and writes down his odometer reading at the beginning of the quarter. He doesn't count the fuel in his tank at the beginning of the quarter. That purchase goes into last quarter. At the end of the quarter he fills his tanks and notes his odometer reading. He counts his final fuel purchase for the last day of quarter as fuel used. I think that is how he calculates his average mpg.

It wasn't me that said that, but here is a reason why.

Real MPG numbers are only "real" for the time period of the average.
If I want to figure how many gallons it's going to take me to DH from Hartford to Syracuse in the summer at 60mph, I would use 8.5 miles/CDN gallon. In the winter I would use 7.5.

what was your mileage last year at this time before the apu? how much fuel have you put in the apu?

I don't want to steal Steves thread,..but I have a problem with my speedo,..it doesn't always work (when its wet out) and I have to figure out my IFTA soon for Dec.
How would you guys go about figuring out the amounts?
Also near as I can tell after a couple of random fill up tests,...I am getting 7.2 to 8.5mpg.
Random by meaning,...I fill up and then drive the day and then fill up to the same amount (I use a stick because my gauge is way off as well) at the end of the day. I have done this on two of the loads so far and it seems to be consistant depending on the terrain.

Yup, that's exactly correct. I use streets and maps to give me all the mileage for each state I traveled in.