[Charles Kaneb]

My short answer is that it has a coated piston and a plated bore.

My longer answer is that they wanted less maintenance and lower emissions than other engines. Therefore, they chose a cleaner-burning synthetic oil, specified a lower oil-gas ratio to try to minimize buildup, and relied on the coatings to avoid seizure when lubrication conditions worked well.

In my case at least it worked. I got 81 hours out of a Rotax piston on Gulf 93 and Motul synthetic. It’s probably the best part of the Rotax package.

[Walt Gifford]

That’s it, it goes so long between maint they don’t want the carbon build up. You can run more oil if you want, I ran 32:1 for the short time I had mine.

Gif

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