What 10w oil do you recommend for M50B20 Engine?. The car has 300k km, and curently runs on no name 10w-40. I boughte the car very recently

Oil is oil bud, the only difference between bsteer brands is personal preference.

Been using liquimoly 10w-40 without any probs on my b25

when i had my e36 320i i used synthetic 10w40 valvoline