hi i need to top my engine oil up 54 reg 1.9tdi a4. iv read the codes in the book vw 506 00/506 01 but im not sure what this equates to. any help appreciated.
You need Castrol edge 5W/30 synthetic oil, that is what Audi recommend. If you check the Castrol or Opie websites punch your car details in and they will find the recommended oil.
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