Hi, I started having oil problems a few months ago and having time to top up oil every 3 to 4 weeks. The garage found there was oil pooling under the rocker cover. They cleaned it all up and told me to keep an eye on it. Its still happening and last week the oil pressure light came on. I managed to put in 2 litres straight away and tried to drive it home. 6 miles on the overheating warning light came on and smoke from under bonnet. Pulled up in safe area immediately. Had to get rescue truck to get it to the garage. On examination underneath oil in pan under engine. Oil pooled in rocker cover again. Mechanic now seems to hebstumped where the leak is coming from, how its escsping etc... all the usual culprit areas/ source of leaks seem to drawing a blank !! Ideas anyone?