Quicksilver's 4"‘Stroke oil technology outperforms automotive oils in marine applications because of its specialized additive package designed for marine engines.

• For use in all 4"‘Stroke Marine Engines "‘New formula 4"‘Stroke oils are engineering approved for all marine 4"‘Stroke applications, including Outboard, MerCruiser, High Performance, Stern Drive/Inboard, and exceeds all Marine industry 4"‘Stroke oil requirements including FC"‘W and FC"‘W Catalyst Compatible.
• 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.