I pumped pretty much full (50 Gallon) of diesel for my trip. This trip mainly freeway and i only got 322 miles from my M109A3. Ouch... that is 6.33 MPG.
No it's not.
Or maybe it is. OR maybe not.
You don't know what it is.
The ONLY way to know your fuel mileage is to start with a full tank, record the miles driven, THEN the fuel added at the end of the trip.
If you are going by
any other method you don't know what mileage you are getting. There are too many places to get it wrong any other way.
And one trip doesn't tell you much because even when doing it right, there are variables. Temperature of fuel you pumped, level of tank each time (do you measure either of those?), etc.
Keep a log, or you really don't know what your mileage is, you are just fooling yourself.
If you have an Android smart phone, look up an app called aCar. It's the most well-written piece of software I have ever seen. Really excellent for keeping ALL your automotive records, and yes, it does multiple vehicles. I bougth the pro version, buteven the free version is terrific.
http://www.zonewalker.com/acar
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