Quote Originally Posted by alle4901
Just courious but what is a puke tank for?
It is the radiator coolant overflow container. Without one, when your engine heats up, the coolant expands and "pukes" some coolant out the overflow tube onto the ground. With a properly designed "puke tank", they contain that overflow, and when the engine cools down and the coolant contracts a bit, the extra coolant will be siphoned back into the engine and radiator.