Tru-Cool Max 40k Transmission Cooler

[08z71bgm]

Under the FAQ for Tru-Cool max


How should I mount the oil cooler fittings?
Fittings can be located up, down or sideways. This advan- tage, plus their compact design, makes installation of our coolers quick and easy.

http://media.spicerparts.com/cfs/files/media/JuzYrhRsKxtwj9rTr/TRU-BRO-42019.pdf?store=original

Directly from the manufacturer.

 

[Jlaughtr]

https://www.ebay.com/itm/Tru-Cool-M...979942&hash=item287a9bfa43:g:gm4AAOSwyO1cnp0W

Just order the cooler off eBay. $186 tax included

 

[Jlaughtr]

Uh, concerning what that guy in that video says about the mounting position.....

Cold fluid is thicker than warm fluid, thus why it will only run in the first few larger tubes when it's cold and you don't need all the cooling surface. As the fluid heats up, it thins and flows through the smaller tubes and utilizing more surface.

Kind of an internal thermostat for the cooler.

As for bleeding air, he said it's an open system with a vent and fill/dipstick tube, SO WHAT? It doesn't have to be a sealed system like the cooling system. The engine crankcase is an open system also. There's air in the oil passages, and on top of the heads under the valve cover and when the motor starts it has to push that air out so the oil can flow/drain...what a moron, lol

the small factory one is mounted with the fittings down. I don’t know much about it so I figured I’d post the video but if the website says any way then down is the most natural for the oem lines

 

[Rocket Man]

Found this video explaining that this cooler should be mounted with fittings up. Start at about 27-28 sec

You can find just as many videos stating the exact opposite too. In all reality, real world testing it does not matter. The instructions explicitly state it can be mounted in any position and in fact I actually got through to the tech department at Tru-Cool due to all the people who think they’re internet engineers and post videos like that. They stated indeed it does not matter. If you look hard enough you’ll find the guys who tested them in both orientations and compared trans temps during the exact same conditions and proved it doesn’t matter.

 

[08z71bgm]

You can find just as many videos stating the exact opposite too. In all reality, real world testing it does not matter. The instructions explicitly state it can be mounted in any position and in fact I actually got through to the tech department at Tru-Cool due to all the people who think they’re internet engineers and post videos like that. They stated indeed it does not matter. If you look hard enough you’ll find the guys who tested them in both orientations and compared trans temps during the exact same conditions and proved it doesn’t matter.

I was skeptical about it. Logic was there but then I figured I’d check the manufacturer and sure enough it states any way you want it’ll work.

 

[S33k3r]

I do have the RPO code on mine and my cooler is right up front, just behind the grill. I also have code GT4 for the 3.73 gear and I bet that is why I have that cooler.

Did the transmission cooler come standard with the GT4 RPO code?

 

[OR VietVet]

Did the transmission cooler come standard with the GT4 RPO code?

I don't know but it makes sense that with a 3.73 gear the Tahoe could be used more for towing and therefore the trans cooler. For all I know the same trans cooler could be on all rigs with 3.42 gears and the 4.10 gears.

 

[Jlaughtr]

I don't know but it makes sense that with a 3.73 gear the Tahoe could be used more for towing and therefore the trans cooler. For all I know the same trans cooler could be on all rigs with 3.42 gears and the 4.10 gears.

I just looked at my build sheet again. I don't have the GT4 RPO, but I have GU6 which is the 3.42 gears.

I also have this code which explains the Trans cooler:

Z82 - TRAILERING EQUIPMENT INCLUDES: * TRAILERING HITCH PLATFORM * 7-LEAD WIRING CONNECTOR * TRANSMISSION OIL COOLER * HIGH CAPACITY AIR CLEANER

 

[OR VietVet]

Yea, I have the same Z82 code.

 

[08z71bgm]

Z82 here