ibdave, the truck you are describing is the CF8000, not F8000 as you posted. I also saw your other post on this in a thread that had nothing to do with this topic where you accused us of guessing. There's no guessing going on on my part, I've driven all of these trucks through the course of my career and do know the difference. I'll suggest your stay here at HEF will be much more pleasant if you check your attitude before logging in here .