Just wanted to run a problem by you all. I believe my trucks thermostat is stuck closed but wanted to see if it could be anything else. Its a 2LT turbo in my 89 Hilux Surf. It will over heat in about 3 or 4 miles. I can't think of anything else besides the thermostat. Is it possible for a line to get clogged? Am I missing something else? The radiator is new (2 years old) and it never sees mud. Any ideas?