It is so funny that you should say that. My mechanic refuses to even touch the radiator to see if it is hot in some places and cold in other places when the engine is up to temperature. He just keeps saying it is impossible for a radiator installed in November to be clogged. And then he told me that I needed a fan clutch for $600+. We just had a screaming match on the phone and I had to threaten him to at least touch the freaking radiator with his hand to see if it was clogged. Whew!! I am one unhappy customer.