Transmission Temp

[denverdale]

I took another drive this weekend to get past the 500 mile mark. I also experienced my second fill up. Mileage was great. Got 20.15 mpg with mostly highway mountain driving and about 90 miles of in town stop and go. I noticed that the transmission temp guage indicated about 200 to 210 degrees as I was driving in town. That seems high to me, but thought I would ask the forum. If I had my trailer behind be (8500#), it surely would be much higher. What is normal?
By the way, I rreally understand why everyone enjoys driving their Dmax's now. It is a lot of fun.
Denverdale

[gardnerteam]

200 to 210 seems a bit high for the Allison. Mine in a 2002 runs about 160 hwy & town in 90 to 100 degree heat in Mexico and Guatemala, and ran up to 200 to 210 working it hard off road in 4WD in the same heat(my truck weighs 8900 with nothing in the bed). Towing 10,000 lbs in 70 to 80 degree heat over the Cascades produced 200 on the uphill and 160 on the downhill. While 200 to 210 is not overheating by any means, from all the trucks I've seen and read about that is abnormally high for D/A normal driving, even in town. In my last 6.5 Peninsular CC 4X4 truck, pulling 18,000 lbs on long grades, my beefed 4L80E would go to 275 degrees, which I think is too hot, but the 4L80E normally ran at 200 to 210 degrees until I put a large exterior cooler in the custom from bumper, then it dropped to 160 with a high of 220 while towing. I built in a large exterior cooler in the custom front winch bumper (Ruenel type) on the D/A, but haven't hooked it up because the Allison runs so cool.

[pullinpower]

denverdale, I too see 200 to 210 deg.unloaded while driving in town,on the interstate it usually goes to 195 deg.This is on a 01, I thought it was because the front bumper didn't allow enough airflow. This is not "hot" but thought if I put my gooseneck with my backhoe on it it would get "hot".Guess I need to go hook up to it and see :D

[mdrag]

Topic moved to 2500HD/3500 HD Trucks & Drivetrain forum.