I took my car to a local garage to get a new alternator fitted which was done fine. The next day driving to work the temp gauge was in the red i managed to get to work opened the bonnet and the coolent thing and steam just came out lots of it. I took it back to the garage they bled the air out filled up the coolent and said it needs a new head gasket (�350.00 at the cheapest) I think the garage is having a laugh the coolent level has remained the same the oil seems fine, no white mess and the exaust has nothing coming out i believe the garage may have let out my coolent for an extra job. Any answers would be appreciated.