I was out getting the mowers ready for another season, and was checking the ferris hydro oil level in those 2 little cup resovoirs, right behind the gas tank. they had dirt and crap all over them! That was a horrible spot to mount these things? Any ferris DD owner will know what Im talking about. I had to be very careful not to get any crap in the cups when opening it up, and I did clean them off good before opening, but you cant get it all.