Engine oil Eneos or OEM BMW

I've owned this car for a year and stuck alot of money into it and love it but have to part cause i just ordered a RHD rx-7 from japan so i need to make room in the garage and i have to part with my VW its sad but i hope i find a good owner. INFO: 46,000 miles ENEOS oil is good for 22,000 miles they say but i still changed it every 5,000 miles. i also used it in the transmission and i felt a difference just from the oil and will use it now in every car i own.

Based on extensive testing, BMW has approved only certain engine oils. Use only approved "BMW High Performance Synthetic Oil." If you are unable to obtain "BMW High Performance Synthetic Oil," you can add small amounts of synthetic oil in between oil changes.