mitchelli
Member
I have a leaking seal on a 1976 horse tiller. The original manual from Troy Bilt says use SAE 90 or 140 wt. No one seems to make those anymore and I have read 200 posts from people saying use 85w-140, 80w-120, 80-90, only use synthetic 85-140, find a GL2 because the GL4 or GL5 they make nowadays will eat up the bronze and brass parts in the transmission, don't worry what you use as long as there is oil in the gears you are all right, and you will never go wrong with synthetic. I think that covers most of the answers from posts and from small engine mechanics. Even tried to find someone in Troy, NY that might have worked at the Troy Bilt plant way back when but no luck there either. I Have to get tilling soon, so before I just add anything as long as it is "around SAE90", does anyone here really know if there is anything 'best' to use in an old Horse tiller??? Thanks in advance for any help. Scott