This is my first post in the motoring forum and my knowledge on motors is very limited. We bought a 2003 citreon berlingo with 125k on the clock last september and it had a small problem with blue smoke on startp but nothing major. It got a lot worse when my mum made the mistake of completely overfilling the oil and now it belches out blue smoke for 5 minutes when the car is started up in the morning. Some people have said that this may be due to bad valve seals but i'm looking for a second opinion. I'll try and get some pics of the engine later on. Also, is it an easy replacement job? I have a neighbor who is a retired mechanic who may be able to help but he has quite severe arthritis now so I doubt he would want to physically assist with it. Alternatively, how much do you think it would cost to get repaired at a garage?