Hello everyone. I am not a professional mechanic. I am just the do it yourself guy. I was recently given three air tools. One vintage Ingersall Rand 1/2 impact, one Allied Pneumatics 1/2 inch impact (label says Made In Japan), and finally a 1/2 inch Blue Point air ratchet. Do I simply use any off the shelf air tool oil in these? Now to my repair question. When the Blue Point air ratchet is plugged in to air it just runs wide open. The valve seems to be stuck down thus the lever just flops around. Can I fix this free tool and if so, how?