Thanks guys, i assumed it wouldn't hurt the system. But never thought about the chrome on the cylinder ? She does leave it sit for long periods, not sure if its pitted or not. Ok thanks for answering just never thought about it. Ya much nicer than manual lift. need one myself LOL. She uses an old ford for the most and trims with the Cub, hoping she sells it down the road cause its pretty clean. But then i would need another shed!