Added transmission cooler (I thought)

LarryJM wrote:
1. Never bypass the in radiator OTO cooler since that is where you get the max heat xfr and no it will never 'WARM' the oil.

2. The radiator OTO cooler will save your xxxx during slow speed or backing up/manuvering like into a camp site when the air flow over the second oil to air (OTA) is basically useless.

3. The proper routing is not a matter of opinion, but based on science and it should go thru the OTO first for #1 reason above and then to the OTA cooler.

Larry

Agreed... Never bypass the rad cooler... I have an 06 silverado, and I added a cooler to the factory one.. Pulling 6000 ft in the NC mountains engine temps when as high as 230f.. Trans never made it past 180f...

Plus when your not moving as was stated the rad cooler is all you got... In the TX heat in traffic youll overheat the trans for sure.. That engine fan dont pull enough air in IMO alone to cool the trans down.

Heres the thing with chevy. The t stat is a 190f. If I idle the truck eventually the trans temp will match the coolant..

Its 8f here in NJ now. If I didnt have the rad cooler the trans would never get warm. In this cold it barely gets over 110f. But if I idle, it warms it up.

With my set up I never go over 180f towing anytime. It only goes to 190f like I said if I sit and idle...

Most times im running 150f 160f like I show below.

These trans have no T stat in them. ( 2006 and below as far as I know. I dont know what the newer chevys do)






Here is 103F outdoor temps towing florida.. A/C on.. Running 70 mph all day...



Heres a vid pulling grade 1st gear 30 mph 3500 rpm. 230f f coolant, and 175f trans. Trans gauge I had added on left dash cluster like a 2500 series..

https://www.flickr.com/photos/93289479@N04/35822079640/in/datetaken/







In summary have the guy put it back through the rad...My opinion