RACE GAS Race Fuel Concentrate FAQs
What does a fuel's octane rating mean?
Octane rating is the standard of measure of the performance fuel in an engine. The octane number is an indicator of the fuel's tendency to burn in a controlled manner versus exploding in an uncontrolled manner. Fuels with a high octane rating and withstand higher compression before detonating or "knocking".
There are several octane numbers for gasoline. What do they mean and which one should I care about?
There are 3 octane ratings commonly used in the US. Research Octane Number (RON), Motor Octane Number (MON) and Anti-Knock Index (AKI or (M+R)/2). Let's look at each of these individually.
Research Octane Number (RON): RON is the "laboratory" measurement of octane. The octane number is determined by running the fuel in a CRF Test Engine and varying the compression of the engine until the fuel "detonates" or Knocks. The engine is not under "load" and as a result RON numbers generally run higher than the other octane numbers.
Motor Octane Number (MON) is measured using the same CRF engine test however the engine is placed under a "Load" of 900 RPM. This test is a better indication of octane because it better simulates the octane in a real world setting, i.e. under load. MON numbers run lower than RON numbers.
AKI or (R+M)/2 is the Anti-Knock Index. This number is the average of the MON and RON numbers. This number is the most important because it averages the octane under load and at idle. This is the number that you should care most about. When a car company or an engine builder specifies a fuel's octane number for an engine, AKI is the number they are referring to.
When someone refers to a "point of octane" what specifically do they mean?
The scale of octane is a point of confusion for even seasoned motor sports enthusiasts and is a very important issue when evaluating octane boost products. A point of octane is 1/10 of an octane number. For example if you increase the octane of 87 pump gas by 8 "points" you are increasing the octane to 87.8. Many consumers see products on the shelf that promise to raise the octane by "10 points" and think that it will raise the octane by 10 octane numbers. That is not the case. Other suppliers rely on this confusion to sell their products. Don't be fooled!
How is RACE GAS different than octane boost products?
First, octane boosters only add a few points of octane and cannot raise the octane of pump gas to that of racing fuel. What many people don't know is that a point of octane is 1/10 of an octane number. For example, if an octane booster says it raises octane by 9 points and it is blended with 87 octane fuel the final octane number will be 87.9 not 96.
Second, octane boosters will raise the octane they don't increase the chemical energy of pump gas. This is because they are not adding the high quality fuel aromatics that are used in RACE GAS. As a result your engine will not "ping" but it will not generate as much power as it would using RACE GAS.
I can't get high octane gas for my boat at the marina. Can I use RACE GAS in my boat?
Yes! RACE GAS will work in any engine that requires high quality, high octane fuel. RACE GAS can be used in:
- Personal Water Craft
Why not just use aviation gas in my high performance engine?
There are two major factors that go into the formulation of aviation gasoline. First is altitude. Aviation gasoline is blended with specific hydrocarbons to target engine operation altitudes of 10,000 feet or more. Some of these hydrocarbons are detrimental to a high performance engine operating at much lower altitude and will degrade performance.
Secondly, aircraft engines don't run at high RPM loads under normal operation. An aircraft at cruise might be turning at 2,500 to 3,000 RPM, significantly lower than the 5,000 to 9,000 red line typically seen in an automobile engine. Aviation fuel is blended to balance performance and economy at these low engine loads and as a result will not be as effective at high engine load.
One other issue that should be considered with aviation fuel is the use of lead. Tetraethyl Lead is used in aviation gasoline to increase the octane, (even in so called "Low Lead" or LL fuels). Lead will damage O2 sensors and catalytic converters which can be expensive to replace.
Why not use jet fuel in my car?
Jet fuel is more like diesel fuel than gasoline. It is designed to be burned in turbine engines at very high operating temperatures. Jet fuel would seriously damage your engine assuming that you could even get it to fire up in the first place!
I have heard that "ethanol" based fuels like E85 and E15 have very high octane ratings. Why not just use those fuels?
"Ethanol" based fuels do have a high octane they also have lower chemical energy than regular pump gas. As a result your engine must be tuned to accommodate the decrease in chemical energy by increasing fuel flow, either through changes to fuel injection or carburetor jet size. On average you will need 30% to 40% more fuel to equal the chemical energy of non-ethanol fuels.
In addition, ethanol based fuels can have negative effect on your fuel system and engine. Ethanol will degrade components in the fuel system like fuel pumps and seals. Ethanol will also promote corrosion in the fuel system and exhaust system.
Will RACE GAS harm my O<sub>2</sub> sensors or catalytic converter.
No. RACE GAS does not contain lead or other additives that can harm O2 sensors or catalytic converters.
If a little RACE GAS is good, wouldn't a lot be even better?
No! It is possible to "over octane" an engine. While the effects on the engine are less than "under octane", the engine will not perform as well as it would with the right octane fuel. We encourage our customers to talk with their engine builder or people with similar engine configuration to determine the "right octane" for your car.
The chart below represents a good estimate of octane requirements by compression ratio. It is not specific to your engine so you may want to blend your fuel to an octane number or two higher than what is listed below.
||Octane Number Requirement
It is important to note that the octane numbers above are the "Anti Knock Index" number or (R+M)/2. The AKI number is important as it is an average of the RON, (Research Octane Number), and the MON,(Motor Octane Number). AKI reflects the "real world" octane and more accurately reflects the octane rating while driving versus a lab test.
Will RACE GAS benefit a stock / street car?
It depends on the car. High performance cars like a Corvette, Viper, Porsche or BMW and turbo charged cars like a WRX will see improved throttle response and power. Cars with carburetors can be tuned to run RACE GAS and will see more power, (changes will need to be made to the carburetor jets and the timing). Regular cars like a Chrysler 200, a Ford Focus or a Toyota 4Runner will not see a great deal of improvement.
It is important to remember not to "over octane" your engine as this will cause a decrease in performance.
RACE GAS Testimonials
“When I was first introduced to RACE-GAS I was a bit skeptical. If you have been around the performance industry for a while you have seen products like this that really didn’t work. What convinced me to try it was the fact that several engine builders who I know had tested it and said it worked.
I decided to try the product as it was meant to be used, on the track. I used 87 octane pump gas with RACE-GAS in my NHRA bracket S-10 Drag Truck. Not only did RACE-GAS work, I took home 2 trophies that day! I was sold!
We started selling RACE-GAS to our customers. What we found is RACE-GAS solved a few problems we had. First, many of our customers are in rural areas where racing fuel or even premium pump gas is not available. When we tune customer’s cars we have to account for the fuel that they have available. This doesn’t allow us to get the most we can out of these engines.
With RACE-GAS our customers can get the high quality, high octane fuel they need to get the most performance out of their cars. We have a number of customers that keep a can in the trunk so they have what they need whenever and wherever they fill up.
The second problem that we solved was the money we were losing by selling racing fuel by the gallon from a drum. What was happening was our staff was filling 5 gallon cans to the top rather than the 5 gallon mark. In essence they were giving away ½ a gallon with every 5 gallon purchase. The net result is we ended up giving away hundreds of dollars away each month.
Now that we have RACE-GAS we no longer sell fuel by the gallon from a drum. The net result is that we are making more money! In addition my customers come back in to the shop more often to buy RACE-GAS giving us more opportunities to sell them products and services.”
VP of Sales and Marketing,
Tesar Engineering and Race Engines
“We were first introduced to RACE-GAS by another engine builder in our area. We tested the product in a high compression Ford 302 race engine. We tested RACE-GAS blended in 93 octane pump gas against 111 octane racing fuel. RACE-GAS produced similar results in peak horsepower and torque as the 111. One difference we did notice is that the in the 5700 to 6400 RPM range RACE-GAS produced more torque and horsepower than the 111.
We used RACE-GAS in 3 Ford race cars in the 2013 Carrera Panamericana in Mexico. All three cars performed flawlessly for the full 2,000 miles of the race! We are very satisfied with the performance of RACE-GAS and now stock the product for our customers” Gary Tesar.
Tesar Engineering and Race Engines
“Over the last 50 years I have been asked to test various lubrication and fuel additive products. With one exception most did not perform as they were intended.
Recently I was hired to test an octane improver. To my surprise it not only worked but was downright impressive. The engine I chose for this test was a motor we built for the Popular Hot Rod Engine Master Challenge. It is a 414 CID LS motor designed to run on 91 octane with power approaching 700 HP.
When testing Race-Gas I was being careful watching the data stream for knocking. For the first test I blended 91 octane and Race-Gas to a final octane of 105. This run didn’t even tickle the knock sensors. I was satisfied that the product may be the real deal so I asked for 87 octane blended with Race-Gas to 101. By the end of the day of testing I was very impressed with the performance of Race-Gas and was convinced that Race-Gas is the real deal. Since that first day of testing we have tested Race-Gas against everything from 98 octane to 116 octane distilled racing fuel and in engines as large as a 550 CI at 13.5:1. Every time Race – Gas performed as advertised!”
Dan’s Complete Automotive and Off Road Specialties Performance Center
“A customer brought in a 428 CID Ford Cobra Jet powered Mustang to us that ran terrible and he knew little to nothing about the engine build other than it was fresh. In sorting out the engine we found the compression to be too high for pump gas. The engine was experiencing severe detonation. We added Race-Gas to the tank and the car ran great! The customer has been running Race-Gas in his car for several months with no issues. This experience sold me on the product and I now recommend it to all of my customers who have engines tuned for big horsepower.”
Dan L Mattila
RACE GAS Reseller List
928 Motor sports
604 E Maple St Suite D Horicon, WI 53032 phone: 920-485-0488 web: 928motorsports.com
BIR Performance Driving
5523 Birchdale Road Brainerd, MN 56401 phone: 866-511-7606 web: birperformance.com
673 Rossiter Saint-Jean-Sur-Richelieu QC J3B 8A8 Canada phone: 450-359-7858 web: dlperform.com
4021 22nd Av. W Seattle, WA. 98199 phone: 206-352-6911 web: gerbermotorsport.com
HMS Motorsport - Ltd
9A Electronics Ave Danvers, MA 01923 phone: 978-774-1615 web: hmsmotorsport.com
Huttner Enterprises LLC.
13531 Balsam Lane N. Dayton, MN 55327 phone: 763-427-9821 web: Huttnerenterprises.com
9800 Hemingway Ave S Cottage Grove, MN 55016 phone: 651-348-8811 web: maperformance.com
Off Road Specialties
8858 Xylite St NE Blaine, MN 55449 phone: 763-785-0228
Paradigm Automotive Performance
310 W. Laurel Street Brainerd, MN 56401 phone: 218-855-1111 web: paradigmauto.com
6 Executive Drive Toms River, NJ 08755 phone: 732-503-4592 web: procomracing.com
36130 W. 159th Street Oak Forest, IL 60452 phone: 708-687-5258 web: http:/rennology.com
2611 Hwy 13 West Burnsville, MN 55337 phone: 952-707-0100 web: rsmotorsinc.com
545 Tamarack Ave Long Lake, MN 55356 phone: 952-473-0203 web: tesarengineering.net
4255 Creek Road Chaska, MN 55318 phone: 952-448-6021 web: tpis.com
Wine Country Motor Sports LLC
1003 Jupiter Park Lane, Suite 4 Jupiter, Florida 33458 phone: 1-866-320-FAST web: winecountrymotorsports.com