
TetraBOOST E-Guard 15 Fuel Additive With Ethanol Protection & Lead Additive
by TetraBOOST
£49.63
MPNTET15945
Prices updated 1 Apr 2026
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Demon Tweeks
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Product Description
TetraBOOST E-Guard 15 is not just another fuel additive with lead replacement, it is the only additive which contains Tetraethyl lead which converts unleaded fuel into true 4 star or 5 star leaded fuel for use in classic and vintage cars. It also includes Ethanol protection which prevents damage to rubber fuel components in older vehicles caused by Ethanol present in modern unleaded fuels.Converts unleaded fuel into real 4 or 5 star leaded fuelPrevents pre ignition and valve seat recession in classic and vintage enginesBoosts octane up to 106 RONSlows fuel burn rate for improved combustion which provides better throttle response and engine pick upPrevent Ethanol damage to fuel system componentsSuitable for road or Motorsport useTetraBOOST E-Guard 15 is a solution containing tetraethyl lead in aromatic hydrocarbons combined with chemical scrubbers which when added to unleaded pump fuel converts it to a true leaded fuel suitable for older engines with soft valve seats which require the added lubrication from leaded fuel. E-Guard 15 also boosts the fuels octane between 2 and 7 points depending on the base fuel and mix ratio. For example, when added to 95 octane unleaded pump fuel at a ratio of 110:1 (100ml per 11.5 litres of fuel) it produces 97 octane 4 star fuel. When added to 99 octane Shell V-power at the same ratio is produces 101 octane 5 star fuel or if a 66:1 mix ratio is used (100ml per 6.5 litres of fuel) it produces 102 octane 5 star plus fuel. When mixed with Shell V-power at a ratio of 10:1 E-Guard 15 can produce a leaded fuel with 106 octane ideal for race engines.Simply add the required dose of E-Guard 15 to your fuel tank prior to filling up at the pump. Please note: For vehicles with foam filled fuel tanks or 'bag' tanks mixing must be done in a separate container and agitated before adding to the fuel tank.TetraBOOST E-Guard 15 is NOT suitable for vehicles fitted with catalytic converters.945ml bottle (treats up to 108 litres of fuel)
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