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  • Sierra full synthetic inboard engine oil
  • 10W-30
  • Recommended for gasoline and diesel inboard and I/O engines
  • Developed specifically for the marine environment and the high running stresses marine engines encounter
  • Reduces friction and wear for long engine life
  • Better lubrication effectiveness for longer durations than mineral oils
  • Reduces oil consumption and improves fuel economy
  • Exceeds all FC-W requirements
  • API-CF/SL

Full Synthetic Marine Engine Oil 10W-30 - Sierra

SKU: 18-9690-3
Regular price $107.00
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  • Sierra full synthetic inboard engine oil
  • 10W-30
  • Recommended for gasoline and diesel inboard and I/O engines
  • Developed specifically for the marine environment and the high running stresses marine engines encounter
  • Reduces friction and wear for long engine life
  • Better lubrication effectiveness for longer durations than mineral oils
  • Reduces oil consumption and improves fuel economy
  • Exceeds all FC-W requirements
  • API-CF/SL