so I have noticed that my coolant is dirty after a change last fall. no biggy, pretty sure its more crud from the lines. I'll change it again and keep an eye on it and life goes on. My oil and ATF look fine. my question is... there's a bit of talk recently about head gasket stuffs and I really don't know what the consequences are. so lets say hypothetically that one has a car with a blown or leaky head gasket. 1. how long does a car continue to run for or is it a catastophic event. 2. what are the symptoms. 3. are there cases where you might consider with an older milage car or for monitary reasons just living with frequent oil changes. I'm just looking for some real entry level information.

thanks folks,
cdt

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2002suzukiGSF600S
1985 190e 2.3