ArtBet
Registered User
Just visited my local Audi dealer and bought oil filter and oil and now i am a bit confused. They gave me Castrol GTX 10W40 half synthetic oil! When i had my last service i used 5W30 Long Life Quantum. Is this Castrol GTX 10W40 any good or should i return it and buy 5W30? Engin is 2.5 v6 TDI BDG. Thanks in advance !