205 degree thermostat?
 

Are these avilable for my truck? Or maybe 207 or 210?

why would u want a hotter temp? my truck runs a constant 190* and doesnt move unless i tow 20k lbs up 12% grade and then and only then does it move up to 210

Fuel milage will go up a bit.

iv never heard that.

So far my 203* Tstat on my 7.3 has been pretty much a waste of money. It might bump up MPG but not enough to notice. IMHO.

Ah ok. I guess Ill look at other things.