The lead replacement fuel additive with Octimise Plus for use with unleaded fuel. An economical 3 in 1 formula with one bottle treating 250 litres of unleaded fuel. It enhances performance and economy as well as cleaning and protecting with stabilises Ethanol petrol E5 & E10. It protects against valve seat recession. Contains an Octimise Plus which is a friction modifier to comply with European REACH Regulations. Endorsed by the Federation of British Historic Vehicle Clubs. Octimise Plus friction modifier enhanced performance and economy, Increase acceleration by up to 3%, Increase economy by up to 2%. Etha-Guard ethanol stabiliser, combats harmful effects of ethanol fuel, enables E5 & E10 use in pre-1996 vehicles, prevents corrosion in fuel system and prevents acidity in ethanol fuel.