Maintenance & Technical > KX500 Original

The Great Gear Oil Controversy....

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Biggreenmonster:
I am a Motul fan for years..love the stuff,never had a problem.I think any quality oil will do just fine!
As far as ATF...works good for clutches but bad for gears that have a hell of alot of torque going through them..viscosity of atf is questionable in a Dirtbike tranny...some people will feel different...i dont trust atf but know of people who swear by it!
A good quality oil is alot cheaper than a tranny grenade,hehehe.its anybody's call on what they want to use...

teamgreen500:
I'm going to be at Kawasaki in a week or so and I'll ask this question. I think it's got a lot to do with "loads" and "pressure".

BTW, I just  "Blew" a tranny and I'm still awaiting "Final Analysis".

I wonder if it was the "Lighter" oils I used? :oops:

I'll report back when I get the answers. :wink:

Manny

Paul:
Manny, what you are looking for has little to do with viscosity adn everything to do with shear strength - the ability for an oil molecule to stay together under stress. The higher the better.

Manhattan Oil's Power Plus makes a crank case fluid that is at 40 wt but has the shear strength of a 90wt gear oil. Good stuff just hard to find.

Rick:
Two weeks ago, I didn't have anyone to ride with (the boy was at a birthday party or something, and it was too hot in the dez for normal folks), so I threw in a thousand rounds of ammo, a selection of pistols and rifles, the big 500, and headed for the desert with lunch and a cooler.  After three hours of shooting, I unloaded the beast for a ride.  Since it was lunch time, I sat in the back of the van eating lunch, and decided to actually read an owners manual while I chomped.  To my surprise, the KX500 manual recomends 10/40 motor oil  :shock: .  Can't say I've ever used motor oil in any tranny except an XR400, but that's a Honda, so you know it's going to break anyway.  But in a KX????

Rick

teamgreen500:
Rick,

"Back in the Day....", Ya, I know...here he goes again...

At the '82 Am. Nat. Qualifier at Saddleback, a kid by the name of Todd Campbell and myself did everything we could to ruin Danny Bentley's day at that race (The Team Green mechanic). We both went thru clutches like Hondas at a hillclimb!

As Danny was changing ANOTHER clutch, I noticed he was filling the cases with 5W-30. He said that ATF was also good for keeping the clutch clean and operating and that a car tranny put loads on the internals to a degree that a motorcycle couldn't match. So, it's fine for the scooters...

But, I still wonder what the scoop's gonna be when I pick-up my motor?

Manny

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