AMSOIL DOMINATOR® Octane Boost

  • Increases octane up to 4 numbers for improved performance
  • Maximizes power
  • Reduces engine knock
  • Improves ignition & responsiveness
  • Helps fuel burn more cleanly
  • Removes carbon deposits

Product Overview

For off-road and racing use only. Increases octane up to four numbers. Helps reduce engine knock for maximum power, responsiveness and performance.

INCREASES OCTANE UP TO 4 NUMBERS

  • Significantly increases engine response and power in two- and four-stroke gasoline-fueled engines.
  • Just one treatment reduces engine knock, improves ignition and helps fuel burn cleaner.
  • Most users find one 12-ounce (354 mL) bottle for 15 gallons (57 litres) of gasoline provides the ideal performance increase.

EXCELLENT LEAD SUBSTITUTE

  • Excellent as a lead substitute in collector automobiles, older off-road equipment and pleasure vehicles.

Ready to buy or need help selecting the right product?

 

Product information checked: September 2026. Product formulations, specifications, applications, availability and published claims can change.
For the latest official information, consult the AMSOIL Corproate Website.

Current AMSOIL Promos
Upcoming Shows
The 10th Annual Field of Dreams Car Show
The 10th Annual Field of Dreams Car Show
Nov. 21-22, 2026 | Florida Classic Park | Brooksville, Florida ...
Blog & News
AMSOIL Expands Off-Road Racing Support with CORR
AMSOIL Expands Off-Road Racing Support with CORR
AMSOIL expands its grassroots racing support as presenting sponsor of CORR for 2026–2027, bringing short-course off-road competition to the Southwest ...
Event Coverage Spotlight
Too Broke for Sturgis at the Pirate's Pub
Too Broke for Sturgis 2026
August 8, 2026 | Pirate's Pub | Paisley, Florida ...
Facts & Info Spotlight
Cold Weather Performance: Why Oil Flow Matters in Severe Winter
Cold Weather Performance: Why Oil Flow Matters in Severe Winter
Severe cold makes engine oil harder to crank and pump. Learn how viscosity grades, cold-flow performance and properly synthetic oil ...
Heritage Spotlight
Commitment to Community
Commitment to Community

AMSOIL’s story is not only about performance and innovation. It is also about building a company that supports people, communities ...