O.k. I checked all of the up pipes and they were not tight. The pipe with the rubber boot coming into the turbo from the intercooler had fresh oil on the bottom of it and it was loose. The rubber boot at the intercooler was loose and had dirty oil around it. I tightened up everything and I dropped 100 degrees in temp. So going up a 6% grade pulling nothing I hit 950 degrees at 65 set on cruise control. Anything else I should check? Thanks