I am having overheating issues while towing my 26' enclosed race trailer. Truck is an 06 f350 crew with the 6.0. It has a banks six gun, banks inter cooler, banks 4" exhaust and an Afe air intake. I have installed an Egr delete kit from aligator and had the oil cooler replaced. Last trip it started overheating up the hills and going through a lot of coolant. It seems to blow a very small amount out of the tank...a little residue on the hood and there were signs below tank. The fan doesn't seem to kick on until the gauge is nearly pegged...I only have the stock temp gauge as of now! Any ideas or suggestions?