i had the aircon on at the weekend and when i pulled up at junctions i could smell burning oil. when i got home i poped the bonnet and could see smoke coming from the mannifold underneath the turbo, so i took the heat shield off and there is two bolts on the underside of the turbo that hold a pipe on the turbo. oil is dripping from the bolt closest to the engine. i tried to tighten the bolt up but couldnt get a ratchet or spanner on to it. what should i do? it doesnt leak that much,just enogh to make a small amount of smoke visible from underneath the heat shield.