Yet here I am having only ever used Shimano oil and have just gone Shigura today after another set of calipers get covered in a light black oily dusty layer
And oddly since I’m not longer in a shop and don’t have access to the right stuff of which I used nothing but when servicing others brakes …. Which would still end up leaking after not long enough.
I use lhm.on my bikes and have stopped having leaking issues with my mineral based brakes …..(Albe it both are road sti units… I use anything but Shimano brakes where possible – when it comes to road stis the alternatives are crap)