Owner reviews for engine oil

as a small engine mechanic at my shop we use the Briggs and Stratton 5w 30 for everything because all we’re fixing is snowblowers but for my personal machines I either use valvoline or amsoil

I myself use Castrol Edge (in 0W20) for my GJ. But I add a bottle of Lubro Moly MoS2, for that added molybdenum (mimics OEM moly infused Mazda 0W20).

I use Pentosin in the e46, which I believe is BMW OEM supplier.

Back when I dailly drove my 05 I went 10k fuel and oil. Donaldson filters and Valvoline premium blue oil

On my first oil change I used Mobil One Synthetic 5w30. That's what most people recommended as well, at least as far as being able to stop into a store and grab some real quick. There's probably better stuff that's pricier and harder to find.

Been running Euro blend Castrol a few years and happy with it. Engine is getting close to 200k, modified, driven aggressively. I'm sticking with works for me.

Got some mobil 1 and it feels pretty good.

been using Castrol edge 5w-30 for the past 5 years My WRX engine still feels responsive but i know 5-40w is good overhead for high temps

I personally use Shell Rotella T6 5w40 for the fact that I live in the florida and the heat is killer.

I've noticed my mk4 2.0 AZG with 250k miles uses 1.5-2 quarts of Mobil 1 in between 4k mile oil changes vs 1L of liqui moly.