The Product

Byron Originals markets a tested and proven fuel for nearly every possible model engine application. The complete fuel line now includes over 50 different products.

Synthetic Castor Blends

One of our most popular blends, these are comprised of a specific ratio of Byron Degummed Castor Oil and Byron Fortified Synthetics. The Synthetic/Castor Blends give modelers the best of both worlds; the clean, corrosion-resistant protection of a proprietary synthetic lubricant, plus castor’s insurance against lean runs. Adding a small percentage of castor complements the quality of this superior blend. Our synthetic’s lubricating qualities can outmatch our competitions’ castor oils any day of the week.

Synthetic/Castor Ratio: Engineered specifically for the application, Performance-Blended Premium Sport Fuels are blended with an 80:20 ratio of synthetic to castor. RACE Gen2 fuels (Except RTR20 Gen2, RTR33 Gen2 and Worlds Blend) are blended with a 50:50 ratio of synthetic to castor.

Straight Synthetic Blends

Until Byron Fortified Synthetics were introduced, additional precautionary measures taken by the modeler outweighed any clean-running benefits of synthetic lubricants. Modelers had to maintain near perfect needle valve adjustments to protect against lean runs, and take special care to treat the engine to an after-run oil, or bearing corrosion was a very strong possibility. Byron Synthetics eliminate both fears. Byron Synthetics have been fortified with both additional corrosion protection and increased load-carrying capacities through special high-pressure additives. Straight Synthetic Fuels are available in both our Premium Sport Blends and our Helicopter Blends, which use a proprietary low-viscosity synthetic oil package formulated specifically for helicopter applications.

Straight Castor Blends

The high rpms of 1/2A engines are protected with a 1/2A Fuel that features 100% Byron Degummed Castor.

Byron Fuel Oil Percentages

We do not claim oil percentages to be a proprietary secret. Oil content is easily checked through evaporation — to claim it a secret should be embarrassing for any manufacturer. Oil content percentages are stated right on Byron Fuel’s bottles. These percentages range between what is specifically needed for a certain application and what modelers want as a form of personal insurance and comfort.

Our most popular blends: Race Gen2 ranges from 6% to 16% total oil content depending upon the application and the engine manufacturer’s recommendation. Premium Sport airplane blends contain 16% total oil content. The three most popular Premium Sport blends of 5%, 10% and 15% Nitro are also available in what we call Traditional blends (20% overall oil content), and our Premium 18 blends (18% total oil content). Helicopter and Race Gen2 Drag blends utilize different oil contents. 1/2A fuel is available in 16% total degummed castor.

Lube Booster For Custom Oil Percentages

For years, we were asked our theory on higher oil contents for breaking in an engine. Ever since we have been blending Byron Fuel, we have used nothing other than 16% oil content (80:20 synthetic to castor ratio) for break-in and we have always had successful break-in periods and longer than average engine life. However, we recognize that some wanted to use a higher oil content during break-in thus, Byron Originals introduced Lube Booster to meet the requests of our customers.

Lube Booster is sold in 12-ounce bottles and has become popular with modelers, not only for formulating their own custom break-in blends, but for adding to our competitors' fuels to bring their lubricating qualities up a little closer to those of Byron Fuels. (Of course it is our hopes that these modelers just treat the competitors’ fuel until their present supply is gone and then buy Byron Fuel with not only the superior lubricants, but the proper ratios of each along with the finest methanol and nitromethane.) If you know the percentage of oil in the fuel you are treating, you can simply follow the bottle instructions for the number of ounces of Byron Lube Booster to add to bring your fuel up to a certain total oil percentage content.

Which Nitro Percentage Is Best For You?

Nitromethane represents a nearly perfect fuel that brings its own oxygen into the combustion process. The nitromethane percentage you need depends a lot on how your engine was designed, and the engine manufacturers’ recommendations should always be considered one of your top recommendations.

Some modelers believe nitromethane contributes to a higher combustion temperature, which is not always true. Depending on your engine setup, higher nitro can actually turn down the heat in certain situations. If you experience predetonation, it’s recommended you go to a lower nitromethane level. High nitro content can cause pitting of the top of the piston and the inside of the glow plug dome. If you run high nitro, you should disassemble your engine occasionally and check it for pitting. If you choose to run a higher nitro than normal, you may need to shim the glow plug head to compensate.

Increasing nitromethane doesn’t assure higher performance. Due to the cost, if you are a sport modeler, run the lowest nitromethane you can as long as your engine is starting well in cold weather and performance is smooth and responsive.

Even if you select a higher oil content for engine break-in, you should always break your engine in on the same nitromethane percentage that you plan to run after break-in.

Consult The Fuel Chart For A Full Fuel Listing!

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