Sierra 18-9420-2 Outboard Motor Oil 4 Stroke 10W-30

Key Features

  • Excellent anti-wear characteristics
  • Reduces friction
  • Offers maximum corrosion protection
  • Reduces sludge to keep engine cleaner
  • Low temperature viscosity for easier cold starting
  • Meets and exceeds quality performance API SJ, CF-2, CH-4
  • NMMA FC-W Certified
  • Sierra premium blend outboard engine oil
  • SAE 10W-30
  • 1 quart bottle
  • Petroleum based formula with highly refined additives
  • Recommended for 4-stroke gasoline outboard motors
  • Developed specifically for the marine environment and the high running stresses marine engines encounter
  • Reduces friction and has excellent anti-wear properties
  • Protects internal engine components from rust, corrosion, and from sticking piston rings
  • Low temperature viscosity
  • Meets or exceeds quality performance API SJ, CF-2 & CH-4
  • NMMA FC-W certified
  • Replaces Mercury 92-8M0078625
  • Replaces Yamaha LUB-10W30-FC-12
  • Replaces Mallory 9-82350


10W30 Replaces Quicksilver:92-802883Q1, J/E:772733,Yamaha and Suzuki.Specifically formulated to meet or exceed the tough requirements of the Marine 4-stroke motor manufacturers, Mercury, Yamaha, Johnson-Evinrude, Suzuki and Honda. Meets and exceeds quality performance API SJ, CF-2, CH-4.

Customer Reviews