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Discussion Starter #1
Hello all,

I bought a 2010 1.8TFSI Audi with manual transmission.

To have a smoother drive I decided to change the diff and trans oil which I do at every car without any issues.

The sticker under the bonnet says that TAF X oil for the manual transmission.

I have 2 questions:

1- I had a research on google and found out that TAF X stands for Castrol 75W90 GL4 oil is that true?

2- I could not find any info in regards to the Differential Oil type of this car? Should I use 75W90 GL5 or 80W90 GL5 or something different for the differential?

Look forward to hearing from you all.


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