I spoke with the Cryoseal people, who told me that they didn't know of any cars that this would not fix, and that a slow leak was the kind most likely to work. Of course, I imagine that every leak is somewhat different.

I have fixed radiators for as long as 10 years with good ol'Barr's Stop-Leak, which I will admit is a different product in a different place. After 10 years from the first use in a 77 Celica, I popped in another bottle of this marvelous stuff and it worked again. It never overheated.

On the other hand, I respect your opinion. But I don't really think I should have to lay out over $1,000 just to be cool in the summer.

Another concern is that having someone messing around under the dash could be an invitation to trouble. At the factory, these things are lots easier to work on. A wire could get shorted out and the results could be disasterous. I had this happen when I had some supposed experts working on a Buick not too long ago.

I suppose I need to ask around and find someone who really believes in this stuff before I give it a try.