theoldwizard1 wrote:
Modern diesels are no where near as good as the older ones ! Less power and worse fuel economy. The added cost of DEF plus higher maintenance costs make them a very questionable purchase.
Is your F350 a 6.8L V10 ? A higher rear axle ratio will help a lot.
I wanted to get a diesel van, until I found out how underpowered they are in the vans. GM de-rates the Duramax to about 250HP and bolts it to the same transmission they use for the 6.0L gas engines. I believe it has to do with heat and clearances under the body. My uncle has a diesel van and he says the only advantage he has found is he can go longer between oil changes than I can.