Millers Oils Octane Booster – CVL Extra Competition Valve Lubricant
Millers Oils CVL Extra is a premium valve seat lubricant and combustion enhancer designed specifically for high-stress motorsport and track day applications. This product is formulated to protect against valve seat recession, a common issue in older engines running on unleaded fuel. CVL Extra provides similar flame front control to leaded fuels, allowing engines to run more advanced ignition timing without the risk of pre-ignition or detonation.
Key Features and Benefits:
- Octane Boost: Adds up to 4 octane numbers to the base fuel, improving combustion efficiency.
- Valve Seat Protection: Proven chemistry protects against valve seat recession, extending engine life.
- Compatibility: Mixes with leaded, unleaded, lead replacement petrol, and fuels containing octane-enhancing additives like ethanol and MTBE.
- Modern Engine Compatibility: Equally effective in modern engines equipped with knock sensors and catalytic converters.
- Ethanol Protection: Protects against the corrosive effects of ethanol found in E5 and E10 unleaded petrol.
Specifications:
- Pack Quantity: 500ml bottle.
- Weight: Approximately 550g per pack.
- Product Code: 5056820502267.
- Specific Gravity: Not specified for this product, but typically around 0.910 for similar formulations.
- Flashpoint: Greater than 62°C.
- Colour: Pale yellow liquid.
Safety and Handling:
- Storage Instructions: Avoid strong direct light and heat.
- Safety Data Sheet (SDS): Available upon request. It is essential to follow all safety guidelines and precautions outlined in the SDS for handling and use.
OEM Approvals and Regulations:
While specific OEM approvals are not listed, CVL Extra is widely used in motorsport applications and is compliant with regulations allowing the use of lead replacement additives in race engines.
Application:
- Dosage: Typically, one 500ml bottle treats up to 20 litres of unleaded petrol. Precise treatment levels may require test bed experimentation for optimal performance.
- Recommended Use: For maximum benefit, use in conjunction with premium, higher octane unleaded fuel. Ideal for motorsport applications where high-performance combustion is critical.

