super99
Well-known Member
I have a 98 Chevy 3500 dually to pull my gooseneck trailer. This afternoon I drove an hour to pick up my Oliver 880. Was doing fine until I got into Silvis, Ill. and had to climb a couple moderate hills, the temp guage went up to 300° real quick. We pulled into the Walmart parking lots and set for about 10 minutes with the motor running in park.It got down to 220° and stayed there for a few minutes, so I took off again. As long as it was flat, it stayed in the 220-240° range, Had to pull a couple good hills in Milan, Ill. and she went up to 300+° till we got on the flat. I pulled over again and set a few minutes and it went back down to 220°. It was fairly flat the rest of the way home, and it ran in the 220-240° range. It was 90° this afternoon, The hottest day I have pulled the trailer with it. Did I damage the transmission? I changed transmission filter and oil about a year ago and haven't driven it very many miles since. I think I should change the trans fluid. I'm not sure how big the oil cooler is, but I think I need to try to fit a larger one in front of the radiator and behind the grill. It's a 454 gas, not sure which tranny is in it. It has 3 speeds and overdrive, no tow haul mode. What say ye????