Rislone 4747-12PK Super Concentrated Octane Booster, 6. Fluid_Ounces, 12 Pack , yellow

I decided to purchase for my 2025 Ford Ranger Raptor to determine if I could tell a difference in horse power performance, even though I added a performance calibration computer program along with a Process West enlarged air box, to include the 3.5" cross over pipes to allow the turbos to really breath. My comments of the product are not based on anyrecent Dyno testing. I added one bottle to each of the 5-full tanks of gasoline of Sunoco 94 octane fuel. I did this to give the computer to evaluate and "learn" the fuel mixture change. On the 5th full tank full, I added one bottle and hit the road and accelerator. Truly I was shocked that the product made a noticeable change I could feel from behind the wheel. Both from a full throttle start, highway throtle punch and residential road driving acceleration. Again, not a dyno test but if I can edge out a noticeable difference, that's all I was l99king for. Without any details, I must have surprised drivers in their modified vehicles in the performance of this mid-size pick-up when I pulled away in small level straight and drag racing situations that arose. Additional performance parts will be added in the very near future but at least the gasoline octane booster proved its point to me.

Works, as instructions are, can half the doseage and still works well.

Nov 2025 parked 48 Plymouth coupe , GM low compression 305 running well on 9 month old 1/2 tank 87 octane 10% ethenol treated with StaBil.Minor hesitation noted. Combustion imbalance rate also. Apr 2026 uncovered outside stored coupe, added one small bottle of Risolene Super Concentrate Octane Booster and 5 gallons of fresh regular gasoline. Took the car on a 10 mile trip , at the 4 mile mark I could realize a pronounced difference in that old 305, backwoods cruising the booster was leveling the hills, by the time it brought me back to start the engine was idling smoother than ever , running stronger than when parked, standing by for another adventure through the Allegheny Platuea of Pa.

I only received 11 bottles. Not a big deal cause it’s still cheaper than buying individual bottles

Fast delivery . Thank you! I use this to maintain octane of stored gasoline ⛽️ . Seems to help for a year or more of storage!! Cheap insurance for my fuel investment!!

Switched to this booster from Lucas. This is WAY better. My GMC Sierra (6.2L) loved it...huge bump in power. I even put it in my Mazda CX50 Turbo - same deal. More power, engine revs nicely. I run 91 octane (no ethanol) pump gas in both vehicles. I pour in one bottle Rislone after fueling up on a full tank. So, it works on turbo engines and non turbo engines

Helps big time

This is a very good octane booster but I'm very disappointed because you cannot buy just a six pack anymore where they did on purpose so I'd have to start buying 12 packs but it is a really wonderful product that won't will not ruin your cat a lot of converter turbo or any plastic parts in your vehicle wonderful octane booster just I wish you would make smaller packages please

I use this religiously in all my harleys to offset lower quality pump gas. Bottle size is perfect fit for my swingarm bag. Usually get 3 to 4 fill ups from a single bottle. Won't ride without it.