I keep my fuel mileage in a data base on my pocket pc, and I exported it to excel and created a chart. Here it is:

 

thats excellent seems as if it stayed pretty consistent except for those few points. you must have been hauling on hell of a load when you dropped to less than 8.

 

The low was actually 9.xx and yes I was hauling my camper to the beach from the foot hills of SC running 70+ MPH. The second low blip was running the same trip same camper at 65 mph. My concern is a steady rise while breaking in and now seems to be a declining trend. BTW the up and down are from towing the camper to the lake almost every weekend from March - November. You can see my off season December - February is kinda flat. Anyone else care to compare their data?

 

Why the spike up the first of April? How many miles total?

 

I have also been tracking my MPG. I use an Excel file, and I have it on my Ripway account if anybody wants to view or 'plagiarize' it: http://h1.ripway.com/hildenja/2007RamFuelMaint.xls

 

You got to load it down every once in a while to clean things up, when I got mine the mileage sucked around 12 mpg, then I started working it pulling a trailer with 5000lbs every day and the mileage went up to 16 around town and 19 on the big road.

 

That spike is an anomaly, my pocket pc died and I lost the data and had to guesstimate for a couple tanks. The total mileage on my truck is 38700 as of today and climbing every day.

 

I am on a cross country vacation right now, but I also use excel to track mileage. If I remember, I will upload my format when I get home. Thank god for free WIFI in hotels!!!