Tetraboost E-Guard 15 945ml

TetraBOOST Fuel Enhancement Additive – Lead Replacement & Octane Booster

TetraBOOST is a high-performance fuel additive designed to replicate the properties of traditional leaded petrol when used with modern unleaded fuel. Recognised by specialists and widely used in historic motorsport, it is regarded as a benchmark solution for classic engines requiring leaded-fuel characteristics.

Used by national motor museums across the UK and Europe, as well as restoration experts, engine builders, and vintage racing teams, TetraBOOST is trusted for both road and competition applications. It enables classic and performance engines to operate with improved protection, smoother combustion, and enhanced drivability without the need to source increasingly scarce leaded fuel.

When combined with high-quality unleaded petrol, it helps recreate BS4040-compliant leaded fuel characteristics, improving combustion efficiency and reducing wear on valve components—even in engines already fitted with hardened valve seats.

Key Benefits:

• Effectively replicates leaded fuel properties from unleaded petrol
• Improves combustion efficiency and slows fuel burn rate
• Enhances throttle response, smoothness, and drivability
• Reduces valve stem and guide wear
• Can increase octane levels significantly depending on blend
• Reported improvements in torque, power delivery, and lap performance
• Suitable for road, track, and historic motorsport use

Performance Notes:

• Typical power gains of 2–3% BHP reported
• Torque improvements of 3–4% seen in dyno testing
• Improved acceleration out of corners and smoother gear transitions
• Many users report measurable lap time improvements

Dosage Guidelines:

Standard mix ratio: 110:1

Examples:

• 350 ml per 40 litres of 95 octane unleaded → approx. 4-star equivalent
• 350 ml per 40 litres of 99 octane super unleaded → approx. 5-star equivalent
• Higher octane levels achievable with increased dosage (refer to manufacturer guidance)

Can be blended to meet MSA regulations (Section P) for BS4040-equivalent leaded fuel requirements (50–150 mg/l lead content equivalent). Also used in methanol applications as a valve lubricant.

Important Information:

• Hazardous product – no overseas shipping available
• Always use in accordance with manufacturer instructions

A specialist fuel enhancement solution designed to bridge the gap between historic engine requirements and modern unleaded fuels.