I recently changed my radiator hoses and coolant (E46/325i). The lower hose connection to the radiator was akward to install from top and I did not get it all the way on - I thought I did ... but did not. I went on test drive and all was OK. Then a few days later, I drove into town and on the way home the water temperature gage went into red and the radiator light came on. I was 3 miles from home and drove home slowly (in hind sight I probably should not have driven). I found the lower hose disconnected. I let engine cool for a hour, refilled with antifreeze and all seems well - but I'm worried I may have caused some damage. Any thoughts?