Aim for 30-35 psi at idle with the a/c on.

20* drop is not as cold as others, but remember... Most of these reports are coming from 4Runner owners. We already have an aux. condenser in front of the radiator.

Maybe you could retrofit an old 4Runner's condenser system into your truck? You can't buy the aux. condenser new anymore, but you should have little problem finding a used unit cheeeep.

BTW: I get about a 35* drop out of my 87 4Runner at idle. It can cause dew to form on the outside of the windows when it's below 90* and humid out (only in rainy weather or at dusk/dawn).

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).