We're running B11. Combine seems OK.
4wd chisel plow tractor (Buhler 2425) seems OK.
Semis seem OK
grain cart tractor seems OK
Old ('61-'63) 4010s on augers seem OK
But, you never know what tomorrow will bring. I guess I'd ask mechanic if switching back to no-bio would guarantee extended filter life?
Did you mention this to fuel supplier?
Good luck.