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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 10406|
  • SKU: 8565736

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    • Boosts Power
    • Improves Gas Mileage
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104+ Octane Boost 16oz 104+ Octane Boost

104+ Octane Boost was America's first Octane Boost, created in 1975. 104+ Octane Boost will improve your mileage and boost your power.
  • Boosts Power
  • Improves Gas Mileage
  • Cleans Fuel Injectors
  • Reduces Knocks, Pings and Hesitation
  • Safe for Catalytic Convertors and Oxygen Sensors
  • Treats up to 18 gallons

Injector Cleaner


104+ Octane Boost 16oz 104+ Octane Boost is rated 4.3 out of 5 by 49.
Rated 5 out of 5 by from Always use it in bike I don't notice a huge difference using the booster in the car, but even using the ethanol infused 92 octane, I really feel the difference on my Harley. More power, more responsive and anything I can do to fight the ethanol is a plus. [This review was collected as part of a promotion.]
Date published: 2016-06-24
Rated 5 out of 5 by from You will notice a difference 104+ Octane Boost will excell in cleaning up old injectors that just need a little attention plus adds performance. [This review was collected as part of a promotion.]
Date published: 2016-06-24
Rated 5 out of 5 by from Best I have ever used Great product increase in horsepower and mileage 1 bottle treats entire tankfull [This review was collected as part of a promotion.]
Date published: 2016-06-24
Rated 5 out of 5 by from Great for my Harley I use this in my Harley-Davidson while touring. It comes in especially handy for the times when premium unleaded gas is not available. Also improves the mileage and bike runs great with no pinging or knocks.
Date published: 2016-01-16
Rated 5 out of 5 by from Increased Power and Mileage on 78 Dodge Van I have a 78 Dodge Van that does not like the current fuel options at the pumps. She does not run well or get great mileage with regular gas or even premium. I started adding the 104+ Octane Boost to the tank when we fill it up. My wife is the one who drives it on trips. She knows the van well. She said it was running better, smoother and without hesitation. Also that we were getting better gas mileage as well with it. From now on at every fill up she gets a bottom of 104+. Great product.
Date published: 2015-09-11
Rated 5 out of 5 by from Added enjoyment to driving my 1965 Lincoln I couldn't adjust the ignition timing in my 1965 Lincoln for the gasoline available today. After boosting the octane with 104+Octane Boost, I set the timing to the original factory specification and the Lincoln runs like a charm. BSB
Date published: 2015-08-17
Rated 5 out of 5 by from Great Product !!! I use a bottle of the 104 Octane with each fill up in my 1970 Buick GSX with a hot 455 engine in her... This product really helps, Matilda purrs right along with it in her system...
Date published: 2015-06-22
Rated 5 out of 5 by from Amazing upgrade to today's fuel I use this on all my cars to make them run better and keeps the motor clean and burns the fuel better too.
Date published: 2015-05-19
Rated 5 out of 5 by from Great Power Boost I used this in my classic car and have seen a difference in the additional horsepower that it created. I use it on every fill up and it makes the car seem to run better and faster.
Date published: 2015-05-02
Rated 5 out of 5 by from I got great mileage. The first time that I used the 104 Octane Boost I was headed to a car show in West Virginia. I added this product to my gas tank to see if my gas mileage would improve. I was really surprised, my gas mileage was the best that I ever got with my PT Cruiser while towing a trailer. With results like this, 104 Octane Boost is being used all the time now.
Date published: 2015-05-02
Rated 5 out of 5 by from This product delivers! Been using this for years. Noticeable difference in fuel mileage when I use on trips @ freeway speeds.
Date published: 2015-05-02
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