I have a VW Golf mk4, 1.9 TDI from 2001 with 230.000+ km on board and for some time now I have blue smoke coming out of the exhaust.
The problem aggravates when I'm stuck in traffic or when the engine is kept at low revs for a long time. After that, when I rev it up, tons of smoke come out, then it goes back to just little puffs of smoke, visible only if you get in the back of the car.
I eats about 750ml of oil every oil change cycle.
For now I have 2 suspicions: oil getting in the turbo and oil getting in the burning chamber, but both cost a lot and there is nocheap "let's see which is wrong" ...
What do you guys think, and how long do you think I can keep running like this ?