Valve Shield

Professional lead substitute

Valve Shield lead substitute is a self-mixing combination of agents formulated according to state-of-the-art additives and fuel technology. Protects soft valve seats against premature wear when using unleaded petrol.


  • Protects and lubricate valves and valve seats
  • Smoother engine running
  • Improved engine reliability
  • Self-mixing


  • Forms a protective and lubricating coating on the valves and valve seats, just like the one built-up by lead in leaded petrol
  • No harmful effects on catalytic converters or the environment
  • Doesn’t influence the octane number
  • Avoids mechanical damage caused by micro welding on the valve seats
  • Prevents fuel system corrosion helps protect components.


Suitable for all two and four-stroke petrol engines turbocharged and non-turbocharged.

Recommended for all classic engines previously requiring leaded fuel now running on unleaded fuel.


Add 25 ml per 25 litres of unleaded petrol fuel (1:1000) each time before filling up.

Valve Shield - Lead Substitute Additive - Syntix Innovative Lubricants