Originally Posted by teggyls

fill it up with water for now. stop wasting your money on coolant until you find the problem.

fill it up, drive it around, put some cardboard on the ground under the engine, and let it sit overnight. if its leaking, youll have some stains on the cardboard. if no leaks, and you are still eating coolant, its most likely your HG. do you have any white smoke coming from the exhaust?