DOMINATOR® Octane Boost

Improves Performance in all Two- and Four-Stroke Gasoline-Fueled Engines

DOMINATOR® Octane BoostAMSOIL DOMINATOR® Octane Boost (AOB) significantly increases engine response and power in all two- and four-stroke gasoline-fueled engines by increasing octane up to four numbers. Just one treatment reduces engine knock, improves ignition and helps fuel burn cleaner. DOMINATOR Octane Boost is the recommended octane boost for all high-performance off-road and racing applications. Most users find one 12-ounce bottle of DOMINATOR Octane Boost for 15 gallons of gasoline provides the ideal performance increase. DOMINATOR Octane Boost is also excellent as a lead substitute at the same treat rates in collector automobiles, older off-road equipment and pleasure vehicles.

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 Product Data Bulletin

What is “engine knock” and why does it matter?

“Knock” is an uncontrolled and explosive ignition of a hydrocarbon fuel, such as gasoline, in the combustion chamber. It causes a knocking or pinging sound, robs the engine of power and, left unchecked, causes serious engine damage. Fuel’s tendency to knock is measured by its octane number. Lower numbers denote greater knock tendency; higher numbers denote greater knock control. Knock may be eliminated with the appropriate octane number.

Buy in the Omaha store at 84th & G or use this Online link to the Amsoil sale page if you are outside of the area.


AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL Warranty Information.

  • Improves performance
  • Removes carbon deposits
  • Maximizes power
  • Reduces engine knock
  • Improves ignition
  • Improves responsiveness
  • Helps fuel burn cleaner


Customer Comments:

I will continue purchasing this product
By Ric 1/16/2017

from Sunnyvale, TX

My car requires 98 octane fuel which is not available. This additive makes the car idle smoothly and allowed me to advance the timing to the manufacturer’s recommendations.

Bottom Line
Yes, I would recommend this to a friend


Omaha Testimonial

Omaha – Sioux Falls courier.

Our own AMC Eagle (old Synthetic Warehouse delivery vehicle) had serious engine knock with a 1500 pound load on hills heading south from Sioux Falls. Only when using the AMSOIL Octane Boost we could keep the engine 65 MPH or more. Amazing product. It works!