Gasoline is not very good, it doesn't pull close with shell, or even with flash. I poured the 98th into the M5 F90 Stage2 820hp, the car stopped driving, constant rollbacks, skips, the flight computer showed an octane of 95.6, that is, the 98th is not close, I also took off the logs, there is horror, the angle does not hold at all, terrible rollbacks, it's good that I did not detect the detonation. I had to go to a pharmacy and buy ethyl alcohol in order to make an E20 mixture to start driving. In general, there are regular tales about "European" gasoline, which is not available in Europe itself, they also import, you know where from. Therefore, it's up to you to decide while I'm pouring on shell and flash.