I have a 2008 V70 Diesel Automatic. My emission light came on and the gears felt like a slipping clutch. My machanic changed the oil in the gearbox and also fitted a new air filter and air flow sensor. The problem is now intermittent. One time I can start and drive witout a problem and another time it goes back to the problem of no power from the gears. Sometimes I can just pop up the road with the prolem , go into a shop, come out 5 minutes later, start up and the problem has gone. Can anyone help please.