I've never posted here before but just gotta share THIS. Trans running too hot, 220 + most of the time. First I added a 12x12 aluminum cooler, No help then a 24x18 W/fan and thermostate. No help. then I added a RevMax # 8HP70-500A. It's a bypass for the coolant preheater. Mounted low on the front driver side of the trans. I have not been able to get my trans over 130 deg f since.
About an hour to install and less than a 1/4 cup loss of fluid in the process. Oh yea and about $120.oo in the door.
You spent alot of unneccessary money,lol.You should probably follow CrazyKids advice and install an aftermarket thermostat to bring the temps up slightly. I don't think Jesse is building his bypass anymore Khris,so you're pretty well stuck with Revmax's overpriced kit. You could of saved yourself alot of money on an unneeded external cooler/fan if you'd read through this thread first Larry. Khris and i both started out with Revmax's kit,then did things differantly,and a whole lot cheaper.BTW you're due for a tranny service on your 14's 8 speed if you haven't done one yet.ZF reconmends doing a service on the 8 speed between 80,000 kilometers (50,000 miles) and 130,000 kilometers (80,000 miles) or 8 years,which ever comes first,and you're at the 8 year mark with your 14
https://www.ramforum.com/threads/revmax-8-speed-thermostat-bypass.171776/
You might want to look into adding the 145 or 165 version into your cooler system.
Improved Racing's Flow Series Motor Sport (FSM) oil thermostat is a universal solution that can be used with any oil cooler on any vehicle or industrial application flowing up to 20 GPM (75.71 LPM). Accelerates fluid warmup time and maintains a minimum fluid temperature. Patented high-flow...
www.improvedracing.com
Here's the instructions to do the fluid level check when you service the 8 speed.