It was trouble free for six months then one cylinder started leaking, the one they shipped me leaked right away, and now I'm on my third one. It has a safety lock so once raised no way for it to drop on you. Hydraulics are only for going up and down, not hold the car up while working. I've had a car up on it for a month no issues. No problem raising full size 5000lb SUVs to full height either. Just not 100% satisfied with the product.