I am getting a tranny temp gauge and I have no idea where to attach it to the tranny? I have a 42RE tranny.

Anyone got any ideas? It is an electrical gauge.

Thanks

yea I am going to have to say that I want to know on this one as well

You can either put the sensor in the side of the pan or inline from the tranny to the cooler. If you do it inline there is a 'T' fitting you can buy to attach the sensor to, if you do it into the pan you need to have the fitting the sensor comes with brazed into the pan. I plan on installing it into the pan.
But what I'd like to know is what’s the best temp for the tranny to be at. After installing a gauge I will decide what size auxiliary cooler to get.

I run a 16000lbs GVW B&M Supercooler. Has worked great.

How serious would it be to run a cooler that kep the fluid "to cool"?

Automatic transmission fluid will provide 100,000 miles of service before oxidation occurs under normal operating temperatures of about 170°F. Above normal operating temperatures, the oxidation rate doubles (useful life of fluid is cut in half) with each 20° increase in temperature.

The approximate life expectancy at various temperatures is as follows:


175°F 100,000 miles
195°F 50,000 miles
212°F 25,000 miles
235°F 12,000 miles
255°F 6,250 miles
275°F 3,000 miles
295°F 1,500 miles
315°F 750 miles
335°F 325 miles
355°F 160 miles
375°F 80 miles
390°F 40 miles
415°F Less than 30 minutes


This information clearly shows why transmission oil coolers and the various maintenance intervals are recommended for severe usage.

Above 300°F, the metals inside the transmission will warp and distort in varying degrees depending on the severity of overheat. Because this damage occurs and fluid life is so seriously impaired, rocking out of snow, mud or sand should never exceed a very few minutes.

rocking out of snow, mud or sand should never exceed a very few minutes.

Wait I'm confused