26-11-2015, 04:27 PM
I've been up in Scotland for a week mainly finding out how terrible the MPG on my truck is.
26.6MPG on the way up steady at 65-70MPH on the motorway
31.7MPG on the country roads in the highlands
27.7MPG on the way home steady at about 60MPH
However I also got to work out how far out my speedo is with the bigger tyres on the truck. On the way up I got 326.4 miles and google maps said 358 miles which is 9.7% difference and on the way back down the speedo said 357.0miles and google said 389miles which is a 9% difference so i can add about 10% to any economy figure.
It means that over the 1100miles I did I used 34.5 gallons which is actually about 32mpg.
Anyway that's now largely inconsequential as the clutch is slipping badly and it has a boost leak.
26.6MPG on the way up steady at 65-70MPH on the motorway
31.7MPG on the country roads in the highlands
27.7MPG on the way home steady at about 60MPH
However I also got to work out how far out my speedo is with the bigger tyres on the truck. On the way up I got 326.4 miles and google maps said 358 miles which is 9.7% difference and on the way back down the speedo said 357.0miles and google said 389miles which is a 9% difference so i can add about 10% to any economy figure.
It means that over the 1100miles I did I used 34.5 gallons which is actually about 32mpg.
Anyway that's now largely inconsequential as the clutch is slipping badly and it has a boost leak.