gems from Amazon......

[raydav]

That would help transmission warm ups here in the Minnesota winters. My E40D cooling lines don't go through the radiator anymore since the trans burned up in 2004 and it was rebuilt with a aux trans cooler in front of the a/c condenser up front. My trans doesn't want to shift properly here in the winter time until it is warmed up to proper temperature.

Rant alert! A lot of things on a truck don't want to work when cold. That is why it is supposed to be warmed before driven.