Millers VSPe Power Plus additive is an \"ALL IN ONE\" fuel treatment now also providing ethanol protection as well as being a lead replacement and an octane improver that adds up to two octane numbers (20 points) to unleaded fuel. It allows older (pre 1990 cars without catalyst converters) and all classic and vintage cars to run safely on unleaded petrol. Endorsed by the FBHVC. Adds up to 2 octane numbers to the base petrol Contains anti oxidant to improve fuel life Prevents pinking and running on Protects against valve seat recession. Bottle treats 40 litres of fuel. Recommended for all classic engines previously requiring leaded fuel and now running on unleaded fuel.