Best Engine oil for Audi A4

In my A4 2.0T I use 4qts of Liqui Moly 5w40 and 1qt of Lucas Heavy Duty Oil Treatment.

I used to have a B8 and kept my oil level OK as per the MMI and only used Liqui Moly oil.

If in Europe use Aral Hightronic 5W40. This was the best oil for my A4 130PD TDI.

Liqui Moly is the only oil I use. 198,000 miles and still purrs like a kitten.

Just buy liquimolly. Best oils I’ve ever put in my cars.

I run Leichtlauf 5W-40 on my B7 A4 2.0T; just hit \~250K km. Used to run Castrol and Motul but as I started doing my own oil changes, switched to the LiquiMoly stuff. Oil consumption issues gone, no complaints from me.

I always use Castrol, good quality oil won't hurt the engine and is just slightly more expensive than off-brands.

Over here in Germany changing your oil every 3k miles in a normal A4 absolutely tanks your resale value. The only reason to do this frequent oil changes is to hide problems. Personally my car did 30 000km(~20k miles) until 91 000km and then every 15 000km(~10k miles). It's a diesel and almost all longish distance highway trips.

I always use liqui-moly leichtlauf 5w40.

The 2.0 liter gas/petrol engine is the weak link here, due mainly to poor piston ring design. We are third owners of a '14 A4 6MT, purchased in mid '17 with 48K miles. We're at 98K miles now, and with 5K engine oil changes using Liqui Moly or Elf/Total fully synthetic, we use a small nominal amount of engine oil between changes.