Engine oil Mobil or VALVOLINE

Mobil-1 FS 0W-40 is a solid choice, and you can’t go wrong with it.

Mobil 1 0w40 FS , it’s the factory fill for the car and the best choice.

Now the easiest one to find that meets my manual requirements is the Mobil 1 euro formula that’s the cool green color. The back of the bottle specifically states it meets VW specs.

I use Valvoline Synpower

If I was spending my own money I would buy Mobil 1.

I’ve gone down an oil research rabbit hole many a time. There’s been some extensive studies done and besides liqui moly, studies have shown that Valvoline extended protection has some of the best wear-prevention additives and performed among the best in lab samples pulled from used oil.

I've always put Mobil1 0-W40 European car oil in my 2015 jetta since the day I bought it brand new but did notice they came out with a new 0-W30 oil but not sure if that's for the new jettas or not.

My current favorite is valvoline 5w30 full synthetic. There are oil analysis of new that show it has a high 100 C viscosity and it has a ton of really good additives.

I do all my own work and the oil changes are either 10k miles or yearly, usually yearly. I'm not too concerned about the exact date but basically every spring the cars get an oil change, air filter and cabin air filter.

I refill about 1/2 qt of oil every 2500 miles.