Thank You for the response, I use synthetic oil, that is what i was told to use for being a truck that pulls a travel trailer, the water temp looks okay to me the only time I see it go a little over the half way mark is in the summer time when I pull the trailer up a steep incline. I here the tapping when i first start the engine and then goes to a very very low tapping. As long as i owned the truck it has never over heated. I am just worried about blowing up the engine.
Once again THANK YOU for your time helping me with this I do not know where to turn too other then going to a mechanic.