got my t/t all way back from baggins after a successful chip ( thanks mate , much appreciated) and after 100 miles finally got within 2 miles from home and car overheated and heaters went cold, pulled over and saw green water pourin out under the car on the right side of the rad as u look at the car. I let it cool down and topped it up and it held the water no probs , no leaks nothing , heaters working again and drove home, checked again , no leaks!! drove to work , no leaks and heaters work fine. What could this be ???

Jock, if u read this , could it be a blocked rad after last time when the rad heated up one side over the other or maybe a not tightened hose so when the pressure buils right up it lets the water out ???

Be very very careful, check all of the obvious things first, but that is exactly what my car did numerous times before the Head Gasket went...