So I am getting ready to full-time RV and wanting to make sure my engine has the best chance to survive. I am upgrading the fan and clutch to the duramax fan through SS Diesel Supply, along with the 180° thermostats. Delco made an electric fan for HD cooling but there seems to be two factory coolers where it needs to go. There are actually a total of 3 auxiliary coolers in front of the condenser and I am not sure what the third one is. 1st two should be engine oil and trans fluid, the 3rd might be power steering, but not sure. Anyone else dealing with this?