Aftermarket Transmission Coolers

Went on a 4x4 trip this weekend and pan temps reached 210 degrees at one point. Seems kinda hot. Converter got up to 230. And the pan temps were around 195-200 on the freeway.

Anyone install an aftermarket cooler?

 

Hi,
Check this tread. A few choices,
3rd gen Transmission Cooler Upgrade | Tacoma World

 

Derale 15875 , 32oz more and a 800 cfm span fan , not cheap but you won’t regret it

 

what kind of temps are you seeing with that massive cooler?

 

With the t stat pinned it won’t go above 150 , with the t stat closed doing it thing 180

 

by Design..... the transmission fluid is "cooled" by engine coolant... which is about 200-220... so your readings while four wheeling were well within spec.... it doesn't need a cooler..
but I have heard that if you chop up your fuel lines and install a fuel heater you get better gas mileage because the gas doesn't have to heat up as much before it ignites....

 

I recently started monitoring my temp. It isn’t 220 for sure. Mine is steady at 185.

 

Thought all these truck came from the factory with a transmission cooler?...mine did, you can physically see it in front of the radiator.

 

Mine 2021 DCSB TRD OR did not, hence: https://www.tacomaworld.com/threads...3rd-gen-today.399305/page-10530#post-26111680

I've just towed again last weekend and saw avg temps @ 180-185F with peak at 195F. Prior I would see as high as 215 but would back out to drop it.

 

no, they don't all come with coolers

 

Probably the pan temp. What’s the other one reading and what are you using to read the temps?

 

I am monitoring the ex converter sensor as well as the pan temp sensor. They have both been under 200F constantly and basically stabilize around 185F. The ex converter sees occasional spikes of 195F. But either way, I was looking to add a cooler, but it seems like the factory fluid temps under my driving conditions are completely fine. I will test further under triple digit heat + uphill etc. It was around 85-90F so it wasn't "THAT" warm.

Also 170-190F are optimal operating temps for the transmission as far as I can tell by going through numerous readings on the topic. 230F+ is to be avoided

 

Pretty normal for this truck. Imo, don't fuck with it. It's a rabbit hole.

 

My buddies 2019 trd has the same one as i have.

 

2020 made after April of 2020 no longer have the tow trans cooler even as a option , only the one built into the radiator