Seems a few (claimed) mechanics have done the baby oil and it was fine... But I have done the lhm/lhm+ in the past and has been fine to the best of my knowledge. Now that lhm is expensive (as I have run out) was looking the hydraulic oil used in trolley jacks.
Shimano fluid disc brakes, is it still safe to use baby oil in them or is it still lhm/lhm+ or trolley jack oil preferred.