im starting to get the same symptoms as u !!

Mine only shows blue smoke when im coasting down a hill in gear as such then i go back on throttle u get a puff and sometimes i get a puff pulling away from traffic lights etc etc and my oil consumption is getting more and more

time for the arse end to get rebuilt soon me thinks ,rings,shells ,crank regrind etc etc

no smoke or nastyness when i start up from cold yet ,

and the grey/black is just fuel so thats ok as most cossies all do that