gear box oil for Jet JWP-15CS Planer

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Forum topic by need2boat posted 05-03-2011 01:45 AM 4849 views 0 times favorited 4 replies Add to Favorites Watch
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544 posts in 2720 days

05-03-2011 01:45 AM

Topic tags/keywords: jet planer gear oil

I got a new to me 9/10 year old jet 15” planer that I’m guessing has never had the gear oil changed. The previous owner really didn’t use it much and reading the manual it says to change the gear every year and it’s calling for 50w gear oil.

I’ve looked quite a bit in my area but just can’t seem to find 50w anywhere. Just wondering what others are using. 75w is the standard in most auto stores.



-- Second Chance Saw Works Blog: Positive Rake

4 replies so far

View crank49's profile


4032 posts in 2999 days

#1 posted 05-03-2011 04:38 AM

If it calls for 50w you better not substitute. I haven’t seen the machine you speak of, but the reason for using a lighter weight oil is to reduce heat buildup when running at high speeds.

View Pete_Jud's profile


424 posts in 3781 days

#2 posted 05-03-2011 05:14 AM

When I bought my JWP-15 a few years ago, I changed the oil, and cleaned everything, It had been used hard before me, I can’t seem to find the manual right now, but I don’t think that there was anything special about the oil, I keep 30, 40, and 80/90 wt around here for the cars, trucks, and tractor. And I can’t recall having to make a trip to the store to pickup oil.

-- Life is to short to own an ugly boat.

View need2boat's profile


544 posts in 2720 days

#3 posted 05-04-2011 01:45 PM

A few friends pointed out that getting 50w motor oil is easy to come by so I did a little looking around and found gear oil and motor oil are not on the same scale. I’m going to contact Jet tech department and see what they have to say. I have a feeling 70-90 will be better then switching over to wither air gun oil, also 50 weight or motor oil.

-- Second Chance Saw Works Blog: Positive Rake

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544 posts in 2720 days

#4 posted 05-23-2011 07:12 PM

Just as an update for future people I spoke with the tech department at Jet. They said 85/90 regular truck gear oil would work fine.

-- Second Chance Saw Works Blog: Positive Rake

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