Originally Posted By: moribundman
VW 504/507 may be used in Audi vehicles as a substitute for
1. if not equipped for Long-Life Service:
VW 502
VW 503
VW 503.01
VW 505
VW 505.01 (RS6 requires VW 505.01)
2. if equipped for LongLife Service:
VW 503.01
VW 503
VW 506
VW506.01
Audi specifically recommends Castrol SLX LongLife III (VW 504/507)
VW allows VW 504/507 with only a few exceptions:
- all 3-, 4-, 5-, 6- cylinder Diesel engines with DPF (Diesel particle filter) require VW 505.01
- the R5-,V-10 TDI PD engine, with or without DPF requires VW 506.01
VW spec oil in a Japanese engine may cause an allergic reaction.
If your Japanese engine requires a mid or low SAPS* oil, VW 504/507 should work fine.
* I believe, but am not sure, VW 504/507 is somewhere between a mid and a low SAPS oil. Someone here may know for sure.
504/507 is a Low SAPS oil
the RS6 requires 503.01 oil. However for the US market, 505.01 was chosen because the availability of 505.01 due to the Pumpe Duse TDI's