Just 5 days ago I replaced the battery after it went dead only to drive it about 30 minutes and the car starts to overheat and warning lights come on about the coolant. My husband added water into the resevore and drove it again about 1 hour and it was bone dry again. I added water once again just to get it home and it has been sitting since. I really don't have the cash to pay a mechanic but will if need be. Any ideas?