[DTaylor]

OK, all sorted. It IS the rocker cover gasket leaking and it WAS SPOTTED AND REPORTED by the technician when it went into the dealers for the recall work.

What happened was Volvo were the customer because they paid for the recall work. I was not given any paperwork or told about the leak because I wasn't the customer. So I never knew about the leaking gasket.

The car is now booked in for next week to have the leaking gasket repaired and as a good will gesture the dealers are discounting the repair price because of the distress caused when we went away on holiday and got stuck on at the motorway services with smoke coming from the engine.

So all in all I am now a lot happier. I know what is wrong, it is going to be repaired, and I do have faith in the dealers again knowing they never missed this in the first place.

Thank you to everyone that commented with help/suggestions. I did appreciate it.