I have a 2004 honda civic and it has 140k miles and i never had any problems with it till this past month the car got really warm and I had 2 garages both look at it and both said the head gasket was bad so it has now been fixed about 2 weeks and yesterday the car got hot agian and the antifreeze reserve bottle was bone dry! Tonight i drove it for 30min and made sure the reserve was full when i left and when i got back the reserve is bone dry again and there is leak behind the block and it is very wet near the right tire and is green of antifreeze what is causing this!