Sierra 9421CAT3 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil, 10W30, Gal., Pack of 4
Meets requirements of modern 4-stroke recreational engines with or without emission catalyst systemsApproved for all 4-stroke applications including Outboard, Sterndrive and InboardExceeds all 4-stroke requirements including FC-W and FC-W Cat CompatiblePro
Category: Specialty Marine
Meets requirements of modern 4-stroke recreational engines with or without emission catalyst systems
- Approved for all 4-stroke applications including Outboard, Sterndrive and Inboard
- Exceeds all 4-stroke requirements including FC-W and FC-W Cat Compatible
- Provides superior corrosion protection under extreme conditions
- Industry leading wear protection and deposit control
- Capitalizing on “ZDDP” anti-wear additive technology
- Prevents phosphorous depletion and extends the emission catalyst life
- NMMA FC-W Certified
- For use in Mercury 4-Cycle Outboard Engines requiring 10W-30 Sold in case packs only
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