Hydro Gear flush and refill - Suggestions for oil weight?
 

Model # 17AICAXAO1O
2016
Serial
1L136H10020

hydro gear 918-05128B

just to satisfy my desire not to rebuild of find a used one, I want to flush and fill the hydro gear on my cub- its slipping, yes probably failing, although it will run fine in heat for an hour or so . Cool it a bit and off she goes

what would be the best to use if I wanted to go with a little heavier weight to see if that would help ?