Pick a ULV trans fluid for me

[BobsArmory]

OP — have you looked into the cooler thermostat bypass? I see them for the 10L with the 3.0 Diesel, but never for the gassers. I’ve read that the diesel keeps the transmission fluid warmer?

FWIW my 10L80 rarely gets above 135-140 in winter, and on hot summer days I have to really be dogging it to get it to 170. Towing and driving respectfully I maybe saw 165-170. I’m pleased with how cool it runs.

I have seen those, I was considering one. One problem I have is that they work so well that it may be a problem in the winter not getting warm enough. I have heard of someone that installs theirs in the springtime and brings it back to stock in the fall. I would love to see someone make a thermostat that activates 20f or so lower than stock