Increases octane up to three numbers for maximum power and efficiency. Designed to improve startup performance and eliminate engine ping or knock for increased power during low-rpm operation. Contains detergents that help combustion chambers and fuel-delivery systems maintain cleanliness for optimum performance. At recommended treat rate, does not harm catalytic converters or oxygen sensors.
I have only used this product In my older Atv. The bike is a 2003 and was idling rough and had poor proformance when cold. The 1st tank of fuel i seen an incredible improvement in the bike idling and driving . Bike doesn't even need the choke when first starting the bike. Totally amazed !
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Ping Prevention Insurance
By 
BootCampBob, 
a 
Verified Buyer 
from 
Upstate New York 
on 
June 10, 2025
My bike requires high-octane fuel, which I can't always find in rural areas, so I grabbed a bottle of this for those times I can't get what the bike needs. Haven't used it yet, but it's good to know I have it when the only thing I can find is 87 or 89 octane.
I haven't gone wrong with any other AMSOIL product, so I'm counting on this in a pinch.
Whenever you're ordering oil for next oil change, give this little guy a try. Good combo to boost 87 ethanol free to 91, instead of mixing gas levels to achieve perfect octane
By 
JEFF, 
a 
Verified Buyer 
from 
the great PNW 
on 
April 17, 2025
Used this in a bike that had sat for years. Drained the tank the best I could, added fresh gas and the Octane boost, bike runs great and has great power
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