I don't really think there is too much I can do about this but I might as well get some more suggestions...My room mate has been chasing leaks in his '98 Pontiac Bonnie for some time now and has been using more water/significantly less coolant since his wallet couldn't keep up with the leak. Last weekend he forgot to put coolant in and it got VERY cold. The next morning I went out to check it since he said it sounded weird and all the water is frozen solid. Hooray! It's under a carport for the time being but it's still exposed to the cold air. Any suggestions on how to speed up the thawing process so I can see how much damage is done? I'm not really too thrilled about him putting 130 miles a day on my back-up Jeep so I'm loooking to fix this A.S.A.P. Thanks