When I was cleaning my truck I noticed that there was a small split in the gasket for the thermostat housing and some coolant stains around it. I'm going to go ahead and just replace the thermostat. It's easy to reach and cheap. Should I replace the upper hose and clamp too? The hose is original with 7 years and 73K miles on it. It looks and feels fine, and appears basically like-new on the outside. The clamp is a factory spring type clamp. Also, what brands of aftermarket hoses are good? OEM is twice the cost of the aftermarket ones I have looked at.