A 100% synthetic biodegradable lubricant for 2-stroke outboard engines with separate or mixed greasing. Meets the most stringent standards set by the NMMA, and passed all the engine tests, relating in particular to extremely tough anti-wear and anti-deposit properties. An excellent oil detergent, it prevents spark plug clogging and fouling, prevents segment sticking at high temperatures, provides very high lubricating power and a long engine life.