Nov 5, 2018 · Audi Model:: a6 avant tdi2.0 r4140 a7. Audi Year: 2014. Posted November 5, 2018. There is a wealth of information out there regarding S-Tronic oil/filter changes - but it's all a bit contradictory. My car has covered 145k and has a full Audi history and it's due a gearbox oil change: The manual shows 38k intervals for oil/filter change. 5.63 UK qt. 6.4 L. Engine oil: VW 507 00. Replacing engine oil in your 2016 Audi A6 Quattro is quite an easy task. It's a bit dirty, but everyone can handle it. It will take about 30 – 60 minutes depends on your skill level and might save you $10 – $30 depends on the region you live in. First unscrew the refill cap on the top of the engine. TVeIHG.