Millers CVL Extra 500ml

£15.83 (+VAT)

Millers CVL Extra (replacement for CVL Turbo) is a valve seat lubricant and combustion enhancer that protects against valve seat recession. CVL Extra provides flame control, allowing engines to run more advance ignition timing, without the danger of pre-ignition or detonation. Specially formulated for high stress motorsport and track day events.

For full details on performance and specifications, please refer to the description and technical data sheets below:


Millers CVL Extra octavin booster, competition valve lubricant and combustion enhancer.


  • One bottle (500 mls) to 20 litres [maximum] unleaded petrol for all motorsport applications
  • Precise treatment levels should be determined by test bed experimentation

Storage Instructions

  • Avoid strong direct light and heat

Performance Profile

  • For maximum benefit use in conjunction with premium, higher octane unleaded fuel
  • Millers CVL Extra is used by an increasing number of engine builders to compensate for the deterioration in pump fuel

Typical characteristics

  • Specific Gravity @ 15°0: 0.910
  • Flashpoint °C: >62
  • Colour: Pale Yellow Liquid

Features & Benefits

  • Adds up to 4 octane numbers to base fuel.
  • Enables older competition engines to run on unleaded fuel
  • Proven chemistry protects against valve seat recession.
  • Provides similar flame front control as lead, thereby enabling engines to run more advanced ignition timing without danger of pre-ignition or detonation.
  • Mixes with leaded, unleaded, lead replacement petrol, and other fuels containing octane enhancing additives including oxygenates such as ethanol and MTBE.
  • Equally effective in modern engines fitted with knock sensors and catalytic convertors.
  • Protects against the corrosive effects of ethanol found in modern E5 and E10 unleaded petrol

Technical Data Sheet


CVL Extra Technical Sheet

Safety Data Sheet


CVL Extra Safety Sheet

Estimated dispatch time within 5 working days.

Picture for illustration purposes only. Actual parts may differ slightly in appearance.