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Gasoline Two-Stroke
Cycle Lubricants
 

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  image of a 23,000-gallon test tank and a Universal Data Acquisition and control system console developed and built by the Institute and used to examine lubricant-related issues in two- and four-stroke outboard engines
 

A 23,000-gallon test tank and a Universal Data Acquisition and control system console developed and built by SwRI are used to examine lubricant-related issues in two- and four-stroke outboard engines.

Concern about energy conservation and environmental pollution has led to leaner oil-to-fuel ratios, which, in turn, have affected lubricant requirements. Exhaust emissions reduction could contribute to a two-stroke cycle engine's viability in the future.


Southwest Research Institute (SwRI) evaluates lubricants used in two-stroke cycle, air-cooled engines using the ASTM-TC and JASO test sequences. These sequences evaluate the lubricant's ability to:

  • Resist combustion chamber deposit-induced pre-ignition

  • Prevent ring sticking

  • Inhibit deposit formation

  • Reduce scuffing

  • Resist spark plug fouling

SwRI offers all engine and chemical tests required to evaluate lubricants for two-stroke, water-cooled engines, including the National Marine Manufacturers Association TC-W3™ specification tests. SwRI also conducts recently adopted worldwide International Standards Organization test procedures to evaluate lubricants for:

  • Exhaust smoke

  • Exhaust system deposits

  • Lubricity

  • Piston cleanliness

For more information about gasoline two-stroke cycle lubricant evaluation capabilities at SwRI or how you can contract with SwRI, please contact Craig Wileman at cwileman@swri.org or (210) 522-3193.
 

Contact Information

Craig Wileman

Gasoline Two-Stroke 
Cycle Lubricants

(210) 522-3193

cwileman@swri.org

Related Terminology

gasoline

two-stroke

lubricants

cycle

oil-to-fuel ratio

JASO

ring sticking

deposits

scuffing

fouling

exhaust

lubricity

air-cooled

combustion chamber

environmental pollution

leaner oil-to-fuel ratios

lubricant requirements

exhaust emissions

reductions

two-stroke cycle
engine

National Marine
Manufacturers
Association

exhaust smoke

exhaust system

piston cleanliness
 

| Fuels and Lubricants Technology Department | Fuels and Lubricants Research Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 12 technical divisions.

November 11, 2009