Maxima MTL or Klotz

 

I use the Honda HP 80/85W oil, very good quality! I use the same stuff in my Cannondale as well.

 

I currently use Bel-Ray's Gear Saver. I have been advised to change to S.P.L Synthetic. It is a 85w-140. Not many places handle this, but you can look around. In racing applications where you are powershifting, this is the only oil that will hold up. Check your local ATV/Motorcycle shop for their recommendations. If you ever get in a pinch, such as draining the oil and then finding that the shop doesn't have any in stock, or being out on the trail and it leaking out, you can substitute type F transmission fluid. It will not hurt your clutches, but the gears in the transmission will "shear" it. I wouldn't run it constantly.

 

I meant to put this in my last post, but I forgot. To split the cases here is what to do:
Remove clutch, crank sprocket, flywheel, stator, etc. Then remove all bolts holding the two halfs together. Now comes the easy part. No special tools are needed. Take a medium sized flat blade screwdriver and place the point between the outside of the crank journal (the 1/2 inch wide circular piece of steel that the rod pin goes into) and the LEFT case. Tap lightly with a hammer. The case will split. Then carefully take the screwdriver and place it in the gap the was made about half-way down the case, and turn it. This should widen the gap more. Gently tap the countershaft (sprocket shaft) while widening the gap. This should remove the left side. Put the screwdriver in between the Right side journal and case. Be careful not to knock over the tranny. Tap the crank out of the case. Sometimes the crank bearings stay in the case and have to be driven out, sometimes you get lucky and they come out with it and the shop can press them off. After the bearings are removed, put the two cases back together so the transmission isn't disturbed.
Hope this helps.