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Quicksilver's 4Stroke oil technology outperforms automotive oils in marine applications because of its specialized additive package designed for marine engines. The mineral 4Stroke oil is also now approved for use in all Outboard Engines; previously only our synthetic blend could make this claim.

• For use in all 4Stroke Marine Engines New formula 4Stroke oils are engineering approved for use in certain marine 4Stroke Outboard applications and exceeds all Marine industry 4Stroke oil requirements including FCW and FCW Catalyst Compatible. In addition, all 10W30 & 25W40 oils are now fully FW Catalyst Compatiable.
• Flagship Engine and Corrosion Protection Industry leading strength and viscosity retention and ultimate corrosion and wear protection.
• The most recommended Marine Oil Over 5 years of engineering and development by the largest marine engine manufacturer in the world.