ITS A 79 280ZX WITH ABOUT 192,000 MILES.....BUT I THINK I FOUND THE PROBLEM. I GOT TO LOOK AT THE CAR TODAY ON MY LUNCH BREAK. LOOKS LIKE A HOLE IN ONE OF THE TOP HEATER HOSES. NOW I GOT TO FIND OUT WHERE ALL THE OIL IS POURING FROM NOW.
my car has been overheating, it had a crack in the radiator which i had re-cored, but its still hotter than id like it to be. im pretty sure its the thermostat, which i will be replacing this weekend. however, a couple of times it got so hot it just about pegged the temp needle at 250. at this point it runs rough and will even stall sometimes. how would i know if i did any permanent damage?
Well I would check the oil dipstick for signs of water(little bubbles of water). Then pull the plugs and see if you don't have oil fouling a few of them. If you do You blew the head gasket and may have warped the head. Sometimes you can get away with putting some ALUMA SEAL powder in the radiator and see if it can clogg the leak, but clean the plugs or it will make no difference, and make sure to turn on your heater so that the ALUM SEAL doesn't clogg your heater valve.
I doubt you could have done anything more serious than a blown gasket and maybe tweeked head. The oil should have been able to cope with that heat and saved any moving parts.