Usage of MOGAS in Rotax 582

Hi,

I have been using the Rotax 582 Mod 99 engine for over 25 years, with experience operating more than five engines through multiple overhauls. I am based in India and have exclusively used Indian MOVGAS throughout this time without encountering any issues.

Given the current situation, where Indian MOVGAS contains more than 10% ethanol (currently around 12.5%), I have been advised to switch to 100LL aviation fuel for use with Rotax 912 engines.

I would appreciate it if you could provide some clarity on the following points:

1.⁠ ⁠What has been the general experience and track record of using 100LL fuel with Rotax 582 engines?
2.⁠ ⁠⁠Is it acceptable and safe to continue using Indian MOVGAS with RON 91 and 12.5% ethanol content in Rotax 582 Mod 99 engines?
3.⁠ ⁠⁠Is there any additional inspection to be carried to use MOVGAS with 12.5% ethanol?