Hello, if I do not drive my SL 300 R 129 regularly, the thing stops after approx. 5 KM. The engine starts to stutter, and goes out. I have to leave the car for about 1.5 hours, and then it runs again. But then without problems. If I then drive regularly, ( every day) I have no problems. But if he stops for about 2 days then I have the same problem again. 5 KM drive, stay lying, 1.5 hours wait, and then go on. Can someone tell me where to drive Is it possible that someone has ever had the same problem. mfg Gerold