I have recently had my head gaskets done due to blowing one and ever since then I am gettting blue smoke from my exhaust. It happens when the motor has been running and I stop at lights or a stop sign. When I pull away I get a plume of blue/grey smoke comming from my exhaust. I've had it in to my dealer and they foud I had to much oil in the motor from when they changed the head gaskets. They drained the excess and replaced the ICP senor (whatever that is) and said it should be fine. The problem is getting worse though. Has anyone else had a similar experience or know what is causing this.