Gasoline blends for 2 stroke motors?

badcarma58

Seaman Apprentice
Joined
Nov 15, 2010
Messages
33
Buying an Outboard. Evinrude 200hp FICHT 2 stroke. Never owned an outboard above 15hp before.

If I'm using gasoline from the car gas station, what fuel do I buy? 87 octane or 89 octane? Also, do I need to add valvetech additive for the 2 stroke. I've heard recomendations to add valvetech to 4 stroke motors because of the ethanol in todays gasolines. Is it a factor with a 2 stroke?
 
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