Do these jacks have to be tuned up or re-calibrated some how every once in a while. I have had mine for less than a year...I the last couple times I went to use it, its been working worse and worse. Today I tried it, and when I pump on the handle it barely moves the car. And there is hardly feel any pressure when I pump the handle.

Do I have to refill it with oil or something. If so...what kind of oil is used? If anyone can help me out asap that would be great.

 

So if I wanted to refill the oil...how exactly do I go about that. I do not remember seeing a bolt or plug that would come out. But maybe I missed it.