We evaluate lubricants used in a variety of two- and four-stroke cycle, air- and water-cooled engines used in outboard marine, and small utility engine applications. Over a dozen test methods based on ASTM-TC, National Marine Manufacturers Association (NMMA), International Standards Organization (ISO) and JASO standards are available to evaluate lubricants ability to resist combustion chamber deposit-induced pre-ignition, prevent ring sticking, inhibit deposit formation, reduce scuffing, resist spark plug fouling and reduce exhaust smoke.
- JASO M340-18 lubricity test
- JASO M341-18 detergency test
- JASO M342-18 smoke test
- JASO M343-18 exhaust system blocking test
- NMMA AF-27 lubricity test
- NMMA CE50S lubricity test
- NMMA CE50S pre-ignition test
- NMMA 15 HP detergency test
- NMMA 40 HP general performance test
- NMMA 115 HP general performance engine test (GPET)