Texaco Xpress Lube They did a radiator flush on my car and ruined my car Bradenton, Florida

Just drain and refill your radiator every five years or so.

Why would you even go for that shiit? Was you car overheating?  

Go to the gm dealer and get some "coolant tablets", drop some in.  Might help.

Don't be a sucker.

Maybe gunk in the cooling system prior to the flush masked an already existing problem with the head gasket, its seals, whatever. As soon as the gunk was washed out, the leak was bared.  I can't say this for sure, but I've been told in past that many leaks in a car can be masked by gunk that collects around a bad seal, only to raise its head as soon as a fluid is changed out. I expect the more mechanically educated who post here will weigh in on that.

This is one of the reasons I got out of computer service.  No matter what you do on someones computer, they think the next thing that happens to it is your fault because you were the last one who worked on it whether the incidents have any relationship at all.

Car mechanics run into this all the time too.

  What you describe is the result of a blown head gasket, not the cause.   A blown head gasket will cause your coolant to slowly leak into the combustion chambers and oil passages.   That would explain why the coolant was low 3 months later.  It was leaking into the engine through the blown gasket.

  Did your mechanic explain to you (or your lawyer) how flushing a cooling system could result in a blown head gasket?  I've never heard of that before and can't imagine how that could be mechanically possible.   Blown head gaskets are almost always the result of overheating.