Customer Ratings & Reviews

I use this in my 2012 Cadillac CTS-V, 6.2L, Supercharged Motor. Friday nights here are big for Street Racing. I'm a 64 y.o., gearhead, so when I pull up in the Caddy, I get some raised eyebrows. I always use, non-E-85, premium fuel and dump a bottle of the go-juice in the tank at the beginning of the evening. It is noticeable in the seat of the pants feel from the stock 556 h.p. LSA. We race everything from hopped up diesel trucks (yes, this IS Montana!), to 5.0 Mustangs to JDM projects. I'm not saying I beat the 'stangs all the time, but enough of the time to get some notice and respect.

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Like the octane boost although the contents do not drain well norm the bottle. Something in the design of my truck gas filler port prevents the bottle from emptying. No doubt as an antisyphon mechanism.

I extract ethenol from gas and use this to replenish the octane. Works wonders and much better than 105 or any other brand!

This octane booster works as advertised. This is a great product.

Works like it says, just needs bottles compatible with capless fuel. 1st bottle got stuck so don't even try without funnel of some sort

This stuff works even better than expected in every vehicle that I use it in.

It is hard to find a higher octane fuel for my Screaming Eagle Harley This additive removes the cylinder ping and knock My Harley runs so smooth and efficient I believe in AMSOIL products

Takes the fuel to a whole level…

This octane booster plus 91 CA pump gas, my turbocharged engine comes alive with no trouble codes being set.

I use this regularly when I'm pulling trailers with my 1500 Ram. It gives a noticeable increase in power.

great

Great product for bigger engines with higher compression. Stops pinging and engine damage in my bbc 406/cammed truck.

I can't always afford to put the 92+ octane in my vehicle (which recommends it), so I will use this every so often to make sure the inside stays as clean as the outside!

I have a Toyota 86 which has to have 93 octane to run decent. When fuel prices hit over $5 per gallon, I thought I would try this Octane Boost with 87 and 89 octane gas. First I tried 89 and it worked just like 93 octane. So I tried 87 and the car ran great with the booster. So now until the prices go back down below $3 per gallon, I will use this. The 86 is a 2.1 liter horizontally opposed 4 cylinder sports car and you have to keep the RPMs up for power. The AMSOil Booster keeps it running as well as 93 octane. We also have a Honda Pilot that I tried a bottle in it with 87 octane and it seems like the Pilot picks up faster, has more power and pickup on take off. I have used AMSOil products in the Harley Davidsons I used to have and the engine oil, transmission oil and gas additives works great in those also.

My wife’s car doesn’t have to use the premium grade gas , this let her use the lower grade. We have been very satisfied

I make non-ethanol gas at home and replace some octane lost in 5he process with this... Dude, it is AWESOME! Makes everything run soooooooooooo much better.

With the soaring gas prices, I wanted to try the octane booster for my Toyota 86 Sports Car. It works great. I can run 87 octane in the car with 8 ounces of this mixed with ten gallons of gas. The car accelerates as if it had 93 octane in it. My Honda Pilot normally uses 87 octane but runs much better with this mixed with the gas. I recommend it and will continue using it.

No sure how this product will protect the valve seats.