-31 C in Chicago ?It can get from -17C to -31C.
I like the idea of one less oil leak.
I also get in and go. No warmup.
Thanks to all of you for the info. I needed help in deciding.
Now when I pull the motor to change the oil pan;
I have the turbo pedestal and orings, glow plugs (only because of mileage), CNC oil lines, HPOP plug
Now to decide on Walker muffler or 4" exhaust and up pipes.
Truck runs great now. This is all preventive maintenance.