I's not so much about the gas economy vs the extra expense of diesel fuel,but everything maintenance wise on a diesel cost more. I really like my 98,but it takes 3 gallons of oil each change. An injector pump will run $2K. If injectors go bad and they do, they are $1k each. If you can't do your own work on them,a lot of shops don't know squat about working on diesels. Then you find good diesel shop and you will find they cost more
The pulling power is amazing,but you pay for it in many ways
