Exmark fan
Member
- Joined
- Sep 9, 2012
- Threads
- 0
- Messages
- 37
Stihl recommends 89 octane. And I have seen trimmers lock up with 1 tank of straight gas ran through them. There's no way it would last 2 years. And you can't blame the salesman in full. I'm sure you got a manual with it. That provides all the info you need.