Quote:
Originally Posted by oil pan 4
Turbo diesels love wide open exhausts.
Unlike a N/A gas engine a turbodiesel is trying to put its full displacement or more out the exhaust every 2 crank rotations.
You don't really want a 180'F thermostat in a diesel.
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Wide open exhausts are best for competition use in my experience, no restrictions equal great top end power and lower mpg. I have had both an unrestricted intake & exhaust and just the exhaust and both times fe sucked. I have found that anything that reduces part throttle low end torque will reduce mpg...
Since blocking the grille i have seen coolant temps rise approx 5-8*f overall, i tried to get a definite answer thru searching the web & forums to find out if a hotter stat was worth swapping in and could not find anything. Any personal experience with it on a diesel? I have a leaky radiator that i will need to swap out with an all aluminum one soon and plan on fitting the truck with a couple of taurus fans so i can ditch the oem fan. I could probably go experiment with the hotter tstats before i do and get my own answer before i get it done...