Mercury 4-stroke synthetic marine oil 10W-30 1 litre

Built for the Sea

Boat engines work hard on the water, operating under greater stress and in a more corrosive environment than automotive engines. Mercury Precision Lubricants are certified to meet NMMA® standards and are proven to perform in harsh marine conditions. Don’t risk failure on the water by using oil that wasn’t designed for the job.

More Effective Corrosion Prevention

When you’re cruising or in extended storage, your engine’s enemy is internal corrosion. Mercury marine oils contain premium corrosion inhibitors that perform 32% better than the industry standard and outperform competitive oils. In a 24-hour test under extreme conditions, Mercury 4-Stroke Oil was 150% more effective at protecting against corrosion than the competition.

More Effective Viscosity Retention

Marine engines operate at high RPMs, handle heavy loads and cope with a wide temperature range. This arduous task can quickly destroy lower-quality lubricants. Mercury engine oils provide more effective engine protection by maintaining their viscosity up to 40% longer than competitive marine oils, and up to 56% longer than automotive lubricants.