Synthetic Motor Oil Vs. Marine Motor Oil

The National Marine Manufacturers Association certifies marine oil.

Synthetic motor is made oil for use in cars and marine vessels. Marine engine design varies from automobile engine design, as does the oil each use. Open water subjects marine engines to unique stressors, including oil-based water pollution and extreme corrosion.

Synthetic Oil

Jet engines initially inspired synthetic oil; conventional petroleum-based oil could not operate effectively under the higher temperatures of an airplane engine. Synthetic oil incorporates a unique additive package compared with conventional oil. The additives increase heat resistance, reduce internal corrosion, offer superior lubrication and wear less quickly.

Marine Oil

Oil manufacturers design two- and four-stroke marine oil specific to the craft's engine, and retailers also sell synthetic marine oil. Boat engines and land engines require different lubrication specifications, and oil pollution in the water is also a factor. Marine oil requires an increased amount of rust inhibitors due to their exposure to salt water.

Oil Certification

The National Marine Manufacturers Association (NMMA) certifies marine oil that meets its unbiased set of quality standards; the organization offers a list of NMMA-certified marine oils are available on its website. The American Petroleum Institute certifies registered engine oil manufactures in similar fashion.

References

• National Marine Manufacturers Association: Oil Certification
• Car Bible: Engine OIl
• First Fives: Making Sense of Synthetic Lubricants
• AMS Oil: Ten Myths About Synthetic Lubrication

Resources

• Sea-Doo: The Late Great Oil Debate
• American Petroleum Institute: Engine Oil