Bypass radiator/tranny cooler combo?
Hi all. I have a 2005 Yukon XL Denali and wondered if anyone else has had success doing a radiator bypass for the tranny lines, and just using an Aux cooler on the front? Issue 1: From the factory...
Forum Discussion
I'm not going to try and debate the point, but based on what I have read from both real auto tranny engineers and auto cooling system engineers the OTW cooler in the radiator does nothing to warm the tranny. This is because of basic PHYSICS the smaller mass, less fluid and the basic "FURNACE" that is called the tranny torque converter will outpace warming the tranny up over the considerable cooler bottom area of the radiator (IIRC there is somewhere around a 20 to 50/60 deg delta between the top and bottom of the radiator) and just the mass of the intially cold engine, larger coolant capacity and the heat being generated by basically friction only in the engine just lags the tranny too much to do any warming even in extreme cold weather.
With that being said IMO you can run a tranny too cold since for efficiency reasons trannys in general are designed to run somewhere in the 170 to 180 range so again IMO simply trying the slap on extra coolers is not recommended in general w/o serious consideration of the particulars of the vehicle being modified.
Larry
With that being said IMO you can run a tranny too cold since for efficiency reasons trannys in general are designed to run somewhere in the 170 to 180 range so again IMO simply trying the slap on extra coolers is not recommended in general w/o serious consideration of the particulars of the vehicle being modified.
Larry
