"Klaatu" wrote:
"Jon" wrote in message
m...
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

I've used this for years on just about anything that needed it, including
my furnace blower motor, which is now 15 years old.
The extendable spout is quite handy.
http://www.grainger.com/Grainger/MAR...A76?Pid=search

I use the teles-oil version by GC. I often lubricate ordinary fans with
that very useful spout. Some motors could work well with a heavier oil of
non detergent sae 30 .

some furnace fans have adjustable belt speed, but be careful not to make it
go too fast overheating the motor. You can either feel the motor heat, and
or measure current.

Greg