Engine oil Shell or AMSOIL

Rotella T4 15w-40 in my E32 735iL. Been running the E30 on the same oil for 6 years and the E32 for two. They both seem to like them, so I don’t see any need to change things up.

I use Amsoil European spec 0W20 for my '18 440i. It's engineered for vehicles requiring BMW LL-17FE+ so you know it's good

Switched to Amsoil awhile back and have no regrets.

Amsoil Signature series 5w30 is one of the best oils you can get that meets the oil specifications

S52B32, 5W40 Rotella T6

I use rotella 15w-40 in every vehicle I own. From my Miata to my XJ, no issues

If you want oil that has zinc, close to the oe oil weight, and is really good I'd go with ams oil, it is expensive but after 3k miles mine is still really clean

I have been using AMSoil for years and did the once a year/25k miles oil change for years and and my engines have had zero issues.

May get hate but I use in both of my is300s Shell Rotella T4 Triple Protection SAE 15W-40 Engine Oil the first oil change is nasty cause it has more detergent but after that you have much cleaner oil changes from that point forward.

Ran Rotella T6 5w-40 in my stage 2+ (and beaten to hell) WRX right up to 120k miles when I sold it.