H3 radiator transmission cooler exposed.

[rascole]

Well was a little bored today so I cut open my old OEM radiator to look at the transmission cooler. Wow that thing is small (that's what she said). I understand thermal dynamics but the darn thing only holds a few ounces of liquid.

 

[Plymouthdriver1958]

That's crazy! So would an GVWR 24,000 lbs external cooler be better than this?

 

[Bruces]

Unlike a cooler that relies on air moving past the fins these are in coolant. Liquid transfers heat much better than air. Acts as a warmer in cold temps too.

 

[4speedfunk]

Yup. The last couple days have been single digit around here. My H3 won’t shift into fourth gear until it is fully warmed up...about five miles on the highway.