Automatic trans cooler

[THubbard]

I have a friend that just bought a 2001 2500 automatic trans to pull a 5th wheel. He bought it on my advice with the exception of the automatic. I wonder if there is any one that has had any experience with:

1. Is the origionl cooler adequate

2. If an additional cooler is needed where and to get

3. Is a trans temp gauge worthwhile ( I already have my views on this, just checking).



"LONG LIVE TDR"

Tom Hubbard

 

[Joe G.]

Bill K. sells them at: http://www.dieseltrans.com/DTTech/index.sht

 

[Bob Wagner]

Bill K's cooler could almost be classsifed as a chiller and yes a temperature gauge is a must with the sender in the line going to the cooler.



Amsoil Universal atf+4 helps to reduce temperature too.

 

[Dr.Kayak]

My Trans goes to 250 every time I pull a steep long hill at a slow speed (10-30 mph). It happened this weekend stuck in traffic crossing the Sierra in a snow storm. It was so lame staring at a 250 trans temp with the outside temp at 32. Due to lack of air flow at slow speeds, I don’t know if an aux. trans. cooler would help that much. An aux. fan on the existing cooler might be more useful. I’m not even sure how much value the gauge is. It just gives you cause to worry about the high temp. I have never been able to just pull over and sit for an hour to let it cool.

 

[jbritsch]

I have the same truck and I pull a 8000lb 5th wheel with it and I love it. The transmission cooler seems to do a good job,but in a traffic situation even without the trailer on ,the transmission temp goes up because there is less air flow. And yes you should definately install a transmission temp gauge. Depending on how good you are at backing a trailer into a space, you'll find that the transmission can get real hot, real fast.

 

[Souders]

transmission cooler

Originally posted by Joe G.

Bill K. sells them at: http://www.dieseltrans.com/DTTech/index.sht

Have an interest in installing another transmission cooler also. What is a Bill K cooler like and how does one find information on one ?.

 

[SnoKing]

I tow a 8-9K 5er and at freeway speeds and climbing hills in 3rd and 4th the temps at outlet stay in 150 degree range as long as the TC is locked up. Temp at the outlet of the transmission can get quit high without causing problems high 200's low 300's. I have two senders, the second one is the transmission body and will move to pan at first fluid change. Pan/body should not go over 180 or so. Stock TC and VB does not lock TC in 1st or 2nd. So climb slow step grades will produce a lot of heat.



I hope your friend got the 4:10 gears if he is towing much or in the hills. DO NOT apply much power below 16-1800 RPMs if the TC is locked up, the line pressure is to low below that to keep the clutches in the TC from slipping. 24V engines are high rev'ers, I try to keep mine between 2,000-2900 when towing. I shift down out of OD manually when RPM's drop below 2K on a hill. LUG a LOAD, KILL a transmission. I also run around town with OD locked out. SNOKING