Millers Oils CVL Extra Competition Valve Lubricant - 4x500ml
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Full details
Millers Oils CVL Extra is a high-performance valve seat lubricant and combustion enhancer specifically designed for classic and competition engines that require protection against valve seat recession when using unleaded fuel. It is the ideal choice for enthusiasts looking to maintain engine health and performance in high-stress racing conditions, though users must carefully measure the mix ratio to ensure optimal performance and avoid engine damage.
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Extended Product Information
FAQs
Can I use this with E10 fuel?
Yes, CVL Extra provides protection against the corrosive effects of ethanol found in E5 and E10 fuels.
Will this harm my catalytic converter?
No, the formula is specifically designed to be safe for use with vehicles equipped with catalytic converters.
How many octane numbers does it add?
It can add up to 4 octane numbers to your base fuel, depending on the initial quality and composition of the petrol.
Is this product suitable for modern daily drivers?
While safe for modern engines, it is primarily intended for classic competition engines or high-performance vehicles requiring anti-knock protection.
What happens if I over-dose the fuel?
A slight overdose generally does not harm the engine, but it is recommended to stick to the manufacturer's specified ratios for optimal combustion results.
Troubleshooting
Engine still experiences light detonation under load.
Verify the mixing ratio against the amount of fuel in the tank; you may need a slightly higher concentration for extreme compression ratios.
Additive appears cloudy or separated in the bottle.
Gently shake the bottle before use to ensure the chemical components are properly homogenized.
Concern regarding fuel filter blockage.
While the additive is designed to be fully soluble, ensure your fuel filters are replaced at the recommended service intervals for your specific vehicle.
Pros and Cons
Pros
- Significantly reduces valve seat wear in classic engines.
- Provides a noticeable boost to octane levels for high-performance tuning.
- Protects fuel systems from ethanol-related corrosion.
- Safe for use with modern emissions equipment.
- Improves combustion stability in high-stress environments.
Cons
- Requires precise measurement before each fueling session.
- Not suitable for long-term storage of fuel in an unused vehicle.
- Costs more per tank compared to standard fuel additives.
- Handling chemical additives requires proper safety gear and caution.
Setup, Compatibility & Care
To use CVL Extra effectively, ensure your fuel tank is accessible and the additive is added before filling up to ensure proper mixing with the petrol. The product is fully compatible with leaded, unleaded, and lead replacement fuels. Always wear protective gloves when handling the lubricant to prevent skin irritation. Store the 500ml bottles in a cool, dry place away from direct sunlight, and ensure the caps are tightened securely to prevent evaporation or contamination. Do not store fuel mixed with this additive for extended periods; consume the treated fuel within a reasonable timeframe to maintain efficacy.