I have a '92 sedan deVille, 112k miles, last summer, it sprayed coolant once out of a microscopic hole on the passengers side of the motor. ( the front end?) To fix this, I put in a bottle of alumaseal in the radiator, and it never did that again. Just last night, it leaked out a ton of coolant again probably from the same spot, this worries me greatly. I dont know what to do because if i put in another can of alumaseal, I will probably clog up my heater core, and I can't weld another piece of aluminum over the trouble area because aluminum doesn't weld. What should I do? Should I sell it quickly, and get something else? (BROUGHAM!)