3.0 TDI (155 kW) 6.1-6.4 liters. (Service replacement) 3.0 TDI (160 kW) 6.1 l. 0W-20, 5W-30: There is a TSB out for oil level monitoring: B 24V2 Cause: 24V2//4G 24702599 Update programming for ECM Have your dealer check your VIN, mine was listed as needing the update. You can also buy a dipstick for the 3.0T, Audi part no. 06E115611H. This is not listed for the 2012 A6, but the dealer can order if for you. Audi A6 Sedan (4G, C7 facelift 2016) 2.0 TDI (190 Hp) quattro S tronic 2016, 2017, 2018 Specs Engine oil capacity : Engine oil specification : 5W-30, 0W-30 Automatic Transmission Fluid (ATF) replacement in Audi A6 /A7 C7 4G 3.0 T - 8 speed automatic transmission Tools needed:Philips screwdriverTorx - I believe Jul 22, 2019. #1. Hi all, Had an oil change on our 3.0 TDI last September. Indy advised me to top up the oil occasionally. Was "getting around to it" 9 months later when the MMI "top up oil (1.25 l)" warning (yellow light) came on. Put a litre in it, warning still on. Yesterday bought more oil and put another 500ml in. Warning still on. VP1t.