107R Octane Booster: How It Improves Race Fuel Performance
By DeatschWerks | Published: 2026-10-25
Category: Product Reviews
Learn how to use DeatschWerks 107R Race Octane Booster to raise octane and prevent knock in high-performance engines. Step-by-step guide with common mistakes.
Quick answer
DeatschWerks 107R Race Octane Booster raises fuel octane to prevent knock and allow more aggressive tuning. Use it correctly by following the mixing ratio and adding it at the right time.
Why octane matters for race engines
Higher octane fuel resists premature detonation (knock) under high cylinder pressure and temperature. This lets you run more boost, compression, or timing without engine damage. 107R is designed specifically for race fuel blends, not everyday street driving.
Common mistakes to avoid
Adding the booster to an empty tank can cause poor mixing. Always add it before filling with fuel. Over-treating won't give extra protection and can foul spark plugs. Under-treating may not raise octane enough to stop knock.
How to use 107R Octane Booster
- 1. Calculate the correct amount: Use 1 can (32 oz) per 10 gallons of fuel. Do not exceed this ratio for standard race fuel blends. Check your engine's octane requirement before mixing. Over-treating wastes product and can cause combustion issues.
- 2. Add booster before fuel: Pour the 32 oz can into your fuel container or tank before adding gasoline. This ensures the additive mixes evenly as the fuel flows in. Adding after fuel leads to poor stratification and uneven octane lift.
- 3. Fill and agitate: Add the remaining fuel to finish the batch. If using a separate container, swirl or shake gently. In a vehicle tank, drive a short distance to complete mixing. Insufficient mixing can leave pockets of untreated fuel.
- 4. Use within the same event: Treated fuel is stable for several weeks when stored properly, but for race conditions, use the mixture within the same day or weekend to avoid oxidation effects. Old treated fuel may lose some octane benefit over time.
Product facts
- 107R Race Octane Booster 32oz cans, case of 8: 107R Race Octane Booster is a fuel additive offered by DeatschWerks in 32oz cans. This listing is for a case of 8 cans. A case gives you multiple cans for consistent use across race events without reordering frequently.
107R Race Octane Booster 32oz cans, case of 8
