Jon wrote:

Please advise me.

What kind of oil should I use for a 1/3 hp electric motor?

The motor bearings have oil ports.

Can't I just use regular automotive motor oil? Would gear oil be better?

It's the fan motor for my electric furnace (squirrel cage). The original
1/3 hp motor blew up. The furnace guy insisted I put a 1/4 hp motor in, but
the capacitor blew and the 1/4 hp motor blew up. I had a surplus 1/3 hp
motor I bought. It turned in the wrong direction so I reversed the stator.
It worked ok all last winter but I want it lubed up for next winter. The
biggest problem is keeping the wires away from the fan blades because the
stator is reversed, but I've got them tied back pretty good. Jon

Not gear oil, at least not hypoid gear oil. Not 3 in 1 either, because
it's vegetable based and turns to varnish. I'd vote for normal engine
oil.

Cheers

Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot net
http://electrooptical.net