Engine oil Mobil or OEM Audi

In all seriousness, Mobil 1 5w-30. Ran it for 70k in my '14 and so far 54k in my '18; zero problems.

Mobil 1 extended performance 5w30

Owner's Manual recommends 5W40; but says that any oil that meets the VW 502.00 specification is fine. I've used that Mobil1 European Car Formula 0W40 since our two 2009 Mk5's (Jetta and GLI) were new, with no problems. Specifically zero oil use between changes.

mobile super 3000 w0-30 is what i would run if i were you

I use Mobil 1 in my RT and it's been good.

Mobil 1 0W20 every 2.5k miles.

I've had my '88 GLI 16V for over 20 years and always used mobil 1 15W50 without issues.

Mobil 1 since day one (first oil change). 5w-30 (as per vehicle spec). 316k+ original owner miles. Virtually no carbon or varnish.

I will say after switching to mobil1 in one of my rigs it cleaned out a hell of a lot of shitty carbon deposits and crap in the valvetrain. Looked nearly new when I pulled the valve cover at 210 thousand miles.

I usend to run syn 15w50 in my tired old vr6 all year round, it helped with seeping issues, lifter noise and all if that. but the oil pressure would be through the roof during first start. so I'd set aside a few mins in the morning to let the car idle, relax, listen to a song and let it get some heat in it. on a normal day, the star up pressure would be .5 bar past the filter bypass (10 bar), warm idle was 2 and a bit, and everything above 3.5k was back to the bypass.