Do it!
My car has just had 80,000 service done with Quantum 505.01![]()
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I shall try explain;
ZDDP (Zinc dithiophosphate) levels had to be reduced due to tighter emission controls (ZDDP attacks the CAT), lower ZDDP means higher wear (chocolate cams anyone).
VW also realised that a special base oil had to be used with a special additive to stop certain parts from oil starvation.
Basically VW screwed up.
VW505.01 will do the job if it is indeed 505.01.
Mine is having what is known in the trade as a 'full fat' oil.