my fiesta has started to blow out lots of white/blue smoke.
I am unsure if this could be the injector seals failing.
I have checked the oil filler cap , no mayo present
expansion tank, no signs of oil there either
car will start up with no problems, I had to drive 20 miles or so home with it like this. During that drive home the car did not seem any different. there were no misfires, still responsive, took it up to 70 mph with no problems, just a smokescreen when accelerating. The smoke did disapear at some point on the drive home only to return again when I had to pull away at junctions.

The camera phone seems to show it as a mirror image when recording
here is a video showing what it is like when at idle and when it is being revved up.

 

id say turbo mate.

 

More likely to be a air leak, or some dodgy station that has a bit of petrol in the diesel tan, though petrol would be more light blueish.
tabetha

 

couple of pics of turbo

 

probably turbo mate, pop the hose of it and wiggle the shaft, if theres loads of play bobs your uncle!

also loads of oil around your exhaust there probably indicates turbo as well!