M1 ESP 0w40 is very good mid saps, specially X3 has brutal VI because GTL, could be good for med runs not so good as FS for long runs. I saw New Life and FS with excessive 30k kms runs and holding it. I'd test Castrol Edge 0w40 C3 first, so you could compare hybrid FS formulation vs mainly PAO in Castrol or same test but full saps with Elf 900 FT/Total 9000 energy/Valvoline Synpower 0w40 50-75% PAO.
Probably you have lower wear with low visco oil, really you should test again Honda 0w20 or 0w30, Fe could be better and Alu little worse, but good oil w20-w30 probably will have lowest general wear for normal driving and some hard run.