My Spectra lasted about 2 years - that would be about 16K miles for me. I think it was actually still under warranty when it started leaking but there is a warranty issue on them. Mine shipped with the instructions that the warranty was void if the radiator was not installed by a 'professional'. I consider myself a professional - but probably not in the sense that they require. I never pursued it because it was a very slight leak that I could deal with that got better when I switched to a 16 pound cap and I was done with Spectra at that point. The radiator I used is supposedly only available in Canada now. I know I can't get one from Amazon or Rockauto.
As an aside - I ponied up today and ordered a Motorcraft from the local dealer - it will be in tomorrow. From everything else I've seen that cost me almost $200 more - long term I hope it is worth it.
