I use Opti-2. the you can find it at most mower shops. This stuff is simple. 1 packet to 1 gallon, for ALL two stroke motors. The guy at my local shop is stingy as he!!, and is still running mowers and motors that are years beyond their warranties off of this stuff. I have breathed new life into my older bikes with this, and just got done breaking in a new 66cc engine off of an initial tank of this stuff with absolutely no variance from the 100:1 mix. Ran like a champ the entire way through.
It's my go-to choice from now on.
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