I just put an ls swap in my hatch, and my car is drinking the antifreeze like I drink water. But I don't have anyleaks under or inside my car. WTF! is going on can anyone tell me??

 

Would you say you drink a lot of water?

 

Air bubbles in the system, blown head gasket... Check the exhaust, check the oil, check the ground, those are the only places it can go... if you just put the antifreeze in, before it was properly heated up, the thermostat prolly wasn't open, so you got a big air pocket in the block...