Planer Gear Box Oil Type??

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Forum topic by RogerC posted 03-30-2013 12:08 AM 4010 views 0 times favorited 6 replies Add to Favorites Watch
View RogerC's profile


51 posts in 3362 days

03-30-2013 12:08 AM

Good Evening all,
I just purchased a used general international 30-115m1 planer and was tuning it up a bit after I picked it up today. The fellow I bought it off mentioned it was probably about time to change the gear box oil so not really thinking to much of it I dropped the oil out of the machine. I received the manual with the machine and assumed the oil type would be in it somewhere. I was wrong. I didn’t sweat it though, I figured it’ll be written right on the unit somewhere. I was wrong again! Either I missed it or a sticker or tag has fallen off at some point. The point is I now have a dry gear box. Anyone know what type of oil I need??

6 replies so far

View Mark Kornell's profile

Mark Kornell

1171 posts in 3543 days

#1 posted 03-30-2013 01:46 AM

Don’t know the specifics of that unit, but 80-90W automotive type is pretty common for gear boxes.

-- Mark Kornell, Kornell Wood Design

View Fred Hargis's profile

Fred Hargis

6843 posts in 3506 days

#2 posted 03-30-2013 12:14 PM

Yep, just about any good gear oil in 90 weight range will do. Just as well you don’t have a factory spec, they are sometimes designed for commercial use applications and may well require some bizarre additive that is of less use to a hobbyist. My Delta is that way (EP-7 additive) and I went with a synthetic gear oil, not knowing whether it had that additive or not. BTW, you might need some help getting the oil in there. On mine, the fill hole is where nobody can reach it. I bought one of these, put a little piece of plastic tube on the end and squirted it in.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 2961 days

#3 posted 03-30-2013 12:33 PM

if it’s 80/90 you can tell by the smell. it has a very pungent funky stink to it. if you cant tell you really need to contact the maker.

View RogerC's profile


51 posts in 3362 days

#4 posted 03-30-2013 07:08 PM

Ok thanks all. I figured as much just wanted to double check. Thankfully Fred general tends to build very servicable machines and this is no exception. There are 2 caps easily accessed on top of the machine, a drain plug easily reached on the bottom and a fill plug on the side also a breeze!

View Loren's profile


11029 posts in 4660 days

#5 posted 03-30-2013 09:06 PM

I think outboard motor oil is a good choice for feed gearboxes.

View Howie's profile


2656 posts in 3935 days

#6 posted 03-30-2013 10:22 PM

google general international. they will help.

-- Life is good.

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