what is the liquid is in it

UHHH!, pcb's maybe?? Id seriously doubt its old enough to have oil with hazardous material in it. That stuff went out of use years ago.
I see the problem I must of smoked to much of that wacky weed in my youth. Didn't that have pcp in it oh damn that was angel dust that was pcp wait what the hell was the question again. My head hurts I am just going to sit here and give myself a good talking to. :-?:-?:-?:-?