I have a '00 ex v10 with 119k miles on 35" tires. was towing a 5k travel trailer in 100 degree heat. My oil temp light and service engine soon light came on I pulled over and shut the truck off. waited about 2 minutes and started truck again. Oil temp light was off, sevice engine soon light was still on. Drove about 5 miles more down road and Oil temp light came on and temp gauge shot straight up and truck lost power. I pulled over and put the hood up. Radiator bottle was not boiling, i checked the oil level and it was right at the low mark on the cross hatches. I got back in the truck and started it and kicked the heater on high and the temp went right back to operating temp which is about 1/3rd of the way up the normal operating range. This is also where the temp had run for the previous 150 miles towing the trailer thru the ozark mtns. I pulled off at the next exit and added a quart of oil, unhooked the battery to shut off the service engine soon light and let the truck set for about 20 min. I then drove another 45 miles at 65mph with the same trailer, outside temp reading 99 both a/c's running on high and the temp gauge stayed right were it always sits. This is the first time i towed my tt on a hot day but i pulled it on the same trip 2 weeks ago when it was about 82 and the temp gauge never moved. I was thinking the temp senor may be going out. Any advice would be greatly appreciated.