- Joined
- Jun 2, 2003
- Messages
- 23,591
VW 503.01 is not a better VW oil spec, just different. VW 502.00 approval includes the VW T4 (VW PV1449) test that ensures compatibility with extended drain.quote:
It doesn't carry the 503.01 long life spec and is not as good as GC 0w30, gold or green.
How do you know this oil is not as good as GC?