Welcome to TetraBOOST

TetraBOOST was launched in 2000 and has been the UK’s best and most effective fuel additive ever since. In 2012, we launched TetraBOOST ‘E’ Guard 15, which added protection against ethanol corrosion to the proven performance formulation of the original product.

Still perfect for both road and race use, TetraBOOST ‘E’ Guard 15 not only enables customers to mix genuine leaded 4 or 5 star fuel as before (TetraBOOST ‘E’ Guard 15 is MSA accepted), but TetraBOOST now contains anti-acid formulations designed to minimise the problems associated with ethanol water absorbtion and acid formulation – unbeatable both for regular driving use and over-wintering situations. Currently in the UK, we have E5 (up to 5% ethanol) with E10 on the Continent. E10 is expected universally in the UK before 2020.

TetraBOOST ‘E’ Guard 15 offers engine protection for up to 15% ethanol content (E15). Remember when using TetraBOOST there is no need to buy a separate anti-ethanol preparation. It comes all together in ‘E’ Guard 15. It is worth remembering that for those that love their leaded that TetraBOOST is now responsible for virtually all the leaded petrol used in the UK and for racing and touring in Europe.

A box of TetraBOOST ‘E’ Guard 15 additive makes 700 litres of octane boosted leaded fuel with built-in ethanol protection. Assuming 30mpg that’s around 4000 miles of motoring for £198 including VAT and delivery to your door, almost anywhere on the UK mainland. So ensure that you accept no substitutes or compromises – order new TetraBOOST ‘E’ Guard 15 – still the world’s finest fuel additive.

NEW FOR 2019:

We have added 3 new products to our line-up, each is designed so that a 50ml bottle can be added to a standard 50L tank. We now offer a conventional Lead Replacement, a Fuel Life Extender, and a Slime Remover. More information can be found in the Product Range section of this website.


Analysed and approved by the FBHVC, TetraBOOST ‘E’ Guard 15 is a unique Tetraethyl Lead (TEL) additive and octane booster.