Sierra 118-9400CAT-2 Catalyst 25W-40 FC-W Marine Engine Oil Quart

Sierra's 25W-40 FC-W Catalyst Oil is an NMMA FC-W Catalyst certified premium blend motor oil specifically engineered for 4-stroke marine engines with or without emission catalyst systems, approved for all outboard, sterndrive, and inboard applications.

Advanced Protection Technology:

• Capitalizes on ZDDP (zinc dialkyldithiophosphate) anti-wear additive technology for maximum corrosion protection and extended engine life
• Prevents phosphorous depletion to extend catalyst life while maintaining excellent anti-wear protection
• Specifically designed to meet the unique requirements of modern 4-stroke recreational engines with or without emission catalyst systems
• Exceeds all 4-stroke requirements including FC-W and FC-W Cat Compatible certifications

This premium blend oil features high detergency, anti-oxidants, and anti-wear properties to protect internal engine components from rust, corrosion, and sticking piston rings in the demanding marine environment. Each bottle contains one quart (946ml) of ready-to-use 25W-40 viscosity oil optimized for the high running stresses marine engines encounter.