Sierra 10W40 FC-W 4-Cycle Outboard Synthetic Blend Oil

Sierra 10W-40 FC-W 4-cycle (4-stroke) outboard synthetic blend oil is a semi-synthetic marine engine oil. It is made to protect outboard motors under high loads and operating stress. It mixes conventional and synthetic base stocks with a marine additive package. The result is an outboard engine oil that holds up in harsh on-water conditions.

Key Features:

• 10W-40 viscosity synthetic blend (semi-synthetic) formulation
• NMMA FC-W certified and API SL rated
• Shear-stable polymer additives and semi-synthetic base stocks help maintain proper viscosity under demanding marine conditions
• Additive package helps keep the engine clean and helps prevent sludge buildup
• The synthetic and organic blend gives good low-temperature properties for quicker starts
• Good film strength across a wide temperature range
• Direct replacement for Suzuki 4-stroke outboard oils

Sierra 4-stroke outboard oils are made to meet the same standards as OEM oils. They are a dependable choice for routine oil changes on 4-cycle outboard engines.