I know this thread is old, but thought I would update it regarding the longevity of the Champion radiator I installed in 2013. The radiator has been in the truck for 4 years and for about 40k miles. It has worked great - UNTIL NOW. The seam at the lower right corner of the upper tank is leaking. I have done three coolant changes in those 4 years, and run a coolant filter, so the leak is not a result of improper maintenance. I'll bet the lifetime warranty will be useless, as Champion will probably require I ship it in for "inspection", and that will just cost way too much. Looking at the offerings of the local parts stores (O'Reilly, Advance and AutoZone), I am not at all impressed. Sure, those radiators have "lifetime" warranties too, and I can get a replacement under warranty by taking the failed radiator into the local store. However, those Spectra radiators with plastic tanks that they all sell just look cheap, and I certainly don't like the crimped on plastic tanks. I have had those seals between the tanks and core fail on other vehicles. I might be able to find someone to tig the hole in my current radiator, but it either way it looks like it will have to come out. So, the Champion went 4 years and about 40K with an original cost of $235. Would a parts store radiator have lasted that long? Who knows, but I will probably end up ordering another Champion.