A little more walmart info here. Today I took some specifics off the plastic bottles.
Supertech NMMA for outboards, in smaller print "and other 2 strokes." $2.43/pt.
Supertech "Precise Mix" Universal ( has graduated reservoir top to measure oz . Label emhasizes trimmers , but does not exclude any 2 stroke. $5/pt.
Looks like the 2nd is the good ****, but neither is synthetic.
I have found you can sort thru junk for good stuff at both Wal Mart and Harbor Freight.:biggrin: