Hello, the temperature outhere right now is about -20 degrees, when i start my truck in the morning oil pressure is ok, oil temp is normal (i have a gauge) when i get going down the road, my oil temp jumps to 220 degrees, and the oil pressure gets real low(about 2 lines from red) my oil temp doesnt get that high when im towing a trailer in 95 degree weather, and its so cold outside its climbing to 220. I touched both oil lines to the cooler and both seem to be warm??? the only thing i can think of is a restriction in the oil cooler or one of the oil lines. ill wait till it gets warmer out and try it again

Anthony

1994 GMC K1500 6.5 TD 4x4
Banks Exhaust system
16x8 American Racing Wheels
285/75/r16 BFG All terrains
Alpine stereo System
Alpine Alarm System
Boost Controller
Autometer Boost,Pyro,tranny,and oil temp gauges
Fuel cooler
FSD Cooler, from my GM Dealer
currently 102,000 miles