this isnt just oil ****** in the turbo, they even bake oil onto the base of the sump, an area continuously submerged in oil.
ive not yet seen an AVS car, with reasonable mileage, with a clean engine. have you? the pre AVS cars are much cleaner and that obviously has a direct bearing on how the engine is going to last.
as for the wrong oil being used? as far as i know there was only one grade/spec specificed for AVS. 5w30 longlife, vw504 (or whatever it was)
ive not yet seen an AVS car, with reasonable mileage, with a clean engine. have you? the pre AVS cars are much cleaner and that obviously has a direct bearing on how the engine is going to last.
as for the wrong oil being used? as far as i know there was only one grade/spec specificed for AVS. 5w30 longlife, vw504 (or whatever it was)