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Originally Posted by bbob A sure sign that the corrosion inhibitors in the coolant failed at some point...i.e..the coolant was not changed and run so long that the corrosion inhibitors failed. That is very likely what eventually caused the hed gasket failure as the center core of the gasket rusted and collapsed. The center steel core of the gasket provides the resiliency to accept the thermal cyling loads as the engine expands and contracts. As the steel core of the gasket collapses due to corrosion it starts to leak. |
It doesn't take long to destroy a gasket with the green coolant either...
I found out my gaskets were changed by a dealer in mid 2001, around 47k.
I bought the car with 80K on it, put another 20K on it, and finally ended up changing the gaskets in late 2003.
When I took them out, there was a phenominal amount of corrosion on the gaskets. One part was basically eaten right through. I maintained the cooling system when i got the car, but apparantly no one did from 01 to about mid 03. That's not very long to have coolant eat right through a gasket, so it just goes to show how important cooling system maintainence is, especially for the '93 - '95 models. Granted most of my bolts were pulled out (dealer must have never time-serted originally), but the gasket was still pretty mutilated. Not that it does the block any good, I but I now run Dex-Cool, just to help save on the gaskets as much as possible.