Is there such a thing as A-weight oil? I recently got a lathe from a neighbor that has "A" marked on the caps to the lubricant reservoirs!

The lathe currently has at least one frozen bearing in the headstock. I'd like to use it for buffing and pen turning in the long run.

Can anyone help me identify my lathe and help decide if it is worth fixing?

Here are the vital stats of my vintage (WWII?) lathe:
-two bearings on headstock with a 4 pulley system in between bearings. One brass and one steel bearing.
-1.5"/8tpi with MT3 headstock.
-38.5"x5"x1/2" lathe iron bed top
-12" diameter turning capacity
-30"+ turning length
-Dayton 3/4HP 115/230V (mod# 4K179 ser# C-286C)
I don't know if the motor is original!!
-1.5" collet with 1/4, 3/8, 1/2, 3/4" inserts. I assume this lathe was used for metal at some time.
-dead center on tailstock
-the only marking on the lathe is on the tailstock with three letters in this order J/I, P/B, 3/8 so it looks like it could be JP3 or JB3 or JB8, etc.
-It also came with a MT3 to MT2 adapter

Thanks in advance,
Dick