RaceGas Ultra 200032 Premium Unleaded Race Fuel Concentrate Increases Gasoline Up to 112 Octan, 12 Pack

Mixed a batch of 89 and one can for a 110 mix in a 5 gallon can. I can empty my tank completely when I need to. My motor is built and tuned to run ms109. I can use this to save some money especially when logging runs off the track. About $7 a gallon cheaper. For almost identical performance.

The price when mixed with premium came out to about the same price as race fuel, but was super handy since all the local suppliers were out of race fuel and I still had a couple of tractor pulls to go. Worked great in a pinch and my tractor ran well with it.

Below was my experience initially, now I'm adding photos. Not quite sure what to make of the four plugs removed from my car. The pictures showing three plugs have one plug from one tank of 100 octane pump fuel, the next is one whole season of 100 octane pump fuel and the third spark plug (rust color) shows two tankfuls of premium unleaded each with one can mixed with 10 gallons of new fuel. I can't explain the color. I pulled a plug to just check, motor was sluggish at low RPM. A set of new plugs later it's back to normal. Getting 100 octane gas at a fuel station has become difficult. But for the safety of the engine and possible ill side effects I've chosen not to continue to use this product. If someone else has this situation, please post your pictures. I'm still trying to figure out what, and why. Y'all be safe and love one another.This isn't to be confused with race gas. It may have the correct octane, but the car sounds different. Probably need to be retuned to a different profile. If I have to pay for Dyno time, I might as well get it turned to run on pump gas. When I built this supercharged four cylinder Honda twenty years ago, race gas was readily available at several local fuel stations. That's a thing of the past. Buying a thirty gallon Drum of fuel is a pain in the ass. Until this spring I always ran Zoom or Sunoco 100 octane. I have to go see the Dyno guru before any more fuel lottery.Really looking to hear what others are experiencing. Reviews are helpful. I have had this car a long time. It runs different and sounds different. I wish I were more certain. Nobody wants to torch a motor.

The stuff works but don't think you are going to feel gains like NOS or even a percent of that.. The ECU will make the power it's told to make either way, But this stuff will help on a Track night if you run your daily on weekends. If anything it will help with Knock on Turbo cars...

It seems to work very well. Unfortunately, it's VERY expensive to use. Sunoco 260 GT race gas is 100 octane, (R+M)/2. In my area it's $7.59 a gallon. Yeah, not cheap by any means. However, if you use this product to achieve 112 octane (R+M)/, the blend ratio is 1 can per 4 gallons of 93 octane pump gas. Adding the price per can, plus the price of 93 octane pump gas your price per gallon soars close to $10.00 a gallon. Even if you use this product with 89 octane pump gas to achieve 108 octane the price per gallon is still about $8.75. I'll use it with NOS passes only as insurance. I'd use it all the time if it wasn't so expensive.

This stuff works great we do Tana cross rally cross and hill climbs It is consistent and hasn't failed us yet You definitely get what you pay for

Guess I'll know for sure as time goes on but pretty pleased with this product. Have a high compression four wheeler, one batch of bad 110 race fuel at the pump from a place I ride made me search for an alternative. Seemed to run as good as it's ever run with this additive, no noticeable pinging or detonation but it was chilly 40 degree conditions, will be back to give it a 5 star rating once I ride in some hot weather next spring.

This octane booster seems to work better than others I’ve tried..I used it in a high performance Harley Davidson instead of purchasing race fuel and the bike ran great . Much better than 93 pump gas ..