this raises the question if you dont install the self-bleeder AND replace with the steel bottle AND the coolient boils what other problems are you opening up. Since the plastic bottle would break under these circumstances and the steel wont might this open up more expensive reapirs elsewhere in the system? Could this be a reason that cars in the $100,000 range still use plastic bottles as a means of protecting more sensitive components? Jeremy --- In dmcnews@xxxx, Martin Gutkowski <webmaster@xxxx> wrote: > Both Stephen Strelczak and Chris Parnham have independently had theirs explode as a > result of the fans not kicking in, and not having self-bleeder kits. I'm guessing the > coolant boils in the lines creating a bubble in the water pump, stopping it working. > here > > somewhere)