Cummins mpg vs 225 Slant 6 mpg

I somewhat question the claims of some peoples mileage claims. I bought a diesel hoping for those 20 mpg claims but never got close. It did have all the power I could ever use, pull a hill with a camper and a boat and accelerate while doing it but power isn't free. I never got better then 17 unloaded on the highway, 12 loaded. The big block gas motor it replaced would only get 14 unloaded and 10 loaded but with diesel at $.80 more per gallon I wasn't saving anything so I sold it. It was a $14,000 truck and didn't get used enough to be the most expensive vehicle I owned.

Personally if you want good reliability and need a light duty truck for a daily driver look for a late 80's 4.0 Jeep. Those 4.0s will go forever and can get 20mpg down the highway which is like getting over 25 with a diesel.