yep did gear oil in son mav the other day, works fine just a little slow.
but the frustration of trying to do it manually ##@@#@#.
Just need a little bent pipe on end of hose to hook over filer hole.
replace the std tap with a more open design would/should improve flow and I'll be happy as pig in mud
I'm buying a couple cheap 5ltr bottles and keeping em just for this job.