Further information: - I don't believe that the piston rings are worn, so I thought the same as niloc and flushed engine, erplaced filter and renewed oil. Rather than clear the problem, this made the problem worse. Within 50 miles the breather had blocked and the blue smoke returned -- short term solution (I was 40 miles from home and didn't want to drive back pouring out blue smoke) - I pulled off the breather hose - end of problem. However, this I consider a linp-home-fix. My Turbo has been overheating lately this problem I found to be a faulty water hose which I fixed only today - could this have been causing the problem? - if the turbo is overheating - will it burn oil & from where? - Although engines are not a problem, I'm relatively new to turbos so help would be appreciated