Modern 2 stroke engines are addressing the fuel efficiency ... If you haven’t guessed already, 4 stroke outboard motors are on the rise. While they are complicated, they’re also efficient ...
Yamalube 2-Stroke Outboard semi-synthetic engine oil NMMA TC-W3 formulation Superior anti-wear and anti-corrosion protection Not recommended for land based products, WaveRunner or Sport Boats.
However, the vast majority of 2-stroke engines are small in cylinder count ... Back in the day, Evinrude and Johnson Marine ...