Last Updated on August 1, 2022 by
The most significant difference between racing fuel and pump gas is octane, but what does this mean? Pump gas typically contains 93 octane, which means that the fuel’s chemical properties can withstand up to 93 percent compression before detonating and causing engine failure. Racing fuel has higher octane levels of around 100, so it burns more slowly than pump gas, which prevents the buildup of pressure and heat, resulting in less stress on the engine during high-performance driving situations. However, Using racing fuel on a normal street car might damage your car’s engine.
How the Racing Fuel Can Affect a Normal Street Car
Racing fuel is designed to be burned at much higher temperatures than regular gasoline. This can cause engine knocking and pre-ignition, damaging an engine that isn’t designed for it. Additionally, racing fuel contains more octane than regular gasoline, making an engine run leaner and produce less power. Finally, using racing fuel in a street car can void the warranty. It’s wise to stick with what your manufacturer recommends!
Understanding the Racing Fuel
Racing fuel releases a higher amount of energy than standard pump gasoline. It has a higher-octane rating to prevent knocking, and it also contains more oxygen than gasoline so that it can be burned more completely. This fuel is also highly volatile, meaning it evaporates quickly. All of these properties allow racing engines to make more power than street car engines.
Understanding Your Car’s Engine and the Right Fuel

Your car’s engine is designed to run on a specific fuel type. That doesn’t mean, however, that it can’t run on other fuel types. You may improve your car’s performance by using a different fuel type. Here’s what you must know about racing fuel in a street car.
- Racking up the miles with racing fuel will not damage the vehicle if the car is driven for short distances and then refueled with regular gasoline.
- The octane level of race gas (which has been diluted with oil) may cause timing issues and excessive pre-ignition under normal driving conditions, resulting in a loss of power or an increase in exhaust emissions.
- Using lower octane fuels for daily driving might improve engine efficiency due to increased air intake temps and reduced knock resistance (due to more volatile hydrocarbons).
- It’s best not to use race gas as the sole fuel source unless you are preparing for a competition or have been advised by a professional mechanic or engineer.
What Fuel is Best Suited for Your Car?

Most current cars are designed to run on unleaded gasoline. Leaded gasoline was phased out in the 1970s due to health and environmental concerns. But racing fuel is still made with lead, and it’s often used in high-performance cars. So, what would happen if you put racing fuel in a normal street car?
The answer is that there isn’t any reason to do this. You’re unlikely to get a significant increase in horsepower or an increased gas mileage rate, but there could be adverse effects. The most obvious effect of putting racing fuel into your street car is that your engine will wear out quicker than it would have otherwise. It will also cause more pollution than it usually does and creates more engine noise since racing fuel burns at a higher temperature than standard gasoline.
The Difference Between Regular and Racing Fuel

Most people don’t realize there is a big difference between the fuel used in regular cars and the fuel used in race cars.
- For one, racing fuel is highly refined and has no impurities that regular fuel does. This means that it burns cleaner and provides more power to the engine.
- Additionally, racing fuel has a higher-octane rating than regular fuel, which means it can withstand higher temperatures without detonating.
- Finally, racing fuel is more expensive and contains less energy per gallon than regular gas. Hence, racers usually try to save as much as possible by using it sparingly and only when necessary.
Properties of Racing Fuel
Racing fuel is designed to release a high amount of energy very quickly. It typically has a higher-octane rating than pump gas and contains more oxygen. This allows it to burn hotter and produce more power. However, racing fuel is also more corrosive and can damage engine components if used for extended periods.
In addition, it doesn’t contain any lubricants that help the engine run smoothly over long distances or maintain proper temperatures. If mixed with gasoline in small amounts (20%), race fuel can increase horsepower and torque, which would undoubtedly satisfy most racers’ needs.
A car running on this fuel type may require less maintenance over time because there are no deposits left on the piston heads due to combustion. On the other hand, this fuel could reduce your vehicle’s efficiency by as much as 25%. If you plan on using race fuel often in your street car, you’ll need to have some plan for future repairs that could cost up to $2,000-5,000!
Properties of Regular Fuel
Most regular unleaded gasoline has an octane rating of 87. This means that it will start to detonate or knock at that temperature. The higher-octane rating means knocking will occur at a higher temperature. Racing fuel is designed to resist knocking under high-compression conditions. It typically has an octane rating in the mid-90s.
So, what would happen if you put racing fuel in your street car?
The higher-octane rating would allow the engine to run hotter without knocking, leading to increased power output. However, it’s important to note that most street cars are not designed to take advantage of this increase in power.
What is the Side Effect of Using the Wrong Fuel?
If you put racing fuel in a street car, the car’s engine will run hotter than usual. This can cause engine damage and decreased performance. In addition, the wrong fuel can damage your car’s emission system, leading to higher emissions and increased pollution. Using the right fuel for your vehicle is essential to avoid these problems.
The Importance of Using the Right Fuel
You’re not alone if you’ve ever wondered how racing fuel would affect a normal street car. It’s a common question and one that has some misconceptions surrounding it. First and foremost, it’s essential to understand that there are different types of racing fuel.
The fuel used in Formula One is very different from the fuel used in drag racing. There are also other types of fuels used for rallying or drifting. Using the wrong fuel can destroy or affect the efficiency of your engine.
Related Article: Is Mazda Miata A Sports Car? (All You Need To Know!)
Final Thoughts
Theoretically, racing fuel should make your car faster. After all, that’s what it’s designed for. However, there are downsides to using it in a street car. First, it’s more expensive than regular gas. Second, it can damage your engine if you don’t tune your car to run on it properly. And finally, it can be tough to find if you don’t live near a race track or specialty shop. So, if you’re considering using racing fuel in your street car, weigh the pros and cons carefully.
Reference 1: https://www.hsoil.com/is-it-safe-to-put-racing-fuel-in-my-normal-car.html#:
Reference 2: https://flowracers.com/blog/racing-fuel-in-normal-car/