Most 2 stroke engines.......99% now use 50 to 1 mix in the fuel.
Others are close to this ratio.
Older....over 20 to 30 years old ........that may have had 20 to 1 ....or other ratios run happily on a 50 to 1 ratio using the newer 2 stroke oils.
And......BONUS.......they have increased engine life because of reduced semi burnt oil build up caused by "too much oil".......particularly around the rings on the piston(s) etc.
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