I know this matter has been discussed several times b4 but I wanted to be sure that what I had was indeed a blown head gasket or a damaged head.

3 days ago as I do routinely was checking water / oil levels in my car a couple of hours prior to driving to work and forgot to put the cap back on my radiator, came back drove to work everything looked fine but it overheated on the way back.

Anyway next day I start the car and it has this weird vibration at idle and the coolant disappears now on a daily basis, haven't checked the dipstick yet but the coolant in the radiator is not brown.

Anyone ?