by pumpguy » Tue May 10, 2022 10:56 am
In addition to my interest in Harley Hummers from back in the day, I am a fan and user of other 2T bikes, namely Maicos and Kawasaki KDX 220s. Many users in these groups are recommending and using ATF, Type F.
If you think about it, automatic transmissions are full of clutches, gears, and bearings, and this fluid goes for years, sometimes even decades without changing. This fluid is specifically designed for just this service.
The problem with using motor oils for this application is you have to be careful they don't contain friction modifiers which can cause slipping clutch, and there are so many flavors to choose from.
Yes, I know many 4T bikes use the same oil for engine and transmission, and for these, special oils are available along with advice not to use oils with friction modifiers.
Oil debates are never-ending. This post is just something more to add to the debate.