All of my engines have the "KTM" gearboxes, some with a friction spherical bearing worm shaft and some with a ball bearing worm shaft. What lubricant should be used with these? (I have used Labelle thick oil, silicon based grease, and lubriplate, and have never had any problems.) The reason I am posting this question is that lubriplate is good for gears in mesh, but the top of the gearbox where the worm and its bearings are located are more properly lubricated with oil, especially the boxes with ball bearings. What do others use, and what is/was recommended by KTM? I did notice that light oils have a tendency to leak around the driving axle. The worm and bearings at the top of the box rely on "splash" lubrication, and there is no "splash" lube of the bearings if lubriplate is used. Also, any lubricant has to be plastic compatible as the intermediate gear in most of my boxes is evidently "Celcon" or something similar.....
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