Can i use Honda transmission fluid in Subaru?

I have been using Honda manual transmission fluid in my Subaru Impreza 2.5i manual gearbox. Been using it for the past 3 years and 70000km without ill effects. Shifts a lot smoother. I began by mixing 50/50 of Honda and 75w90. Now I've been using 100% Honda MTL. No weird noises, no grinding, no extra filing on the magnetic drain plug.