HIGHTEC Cetane Booster is a performance fuel additive that raises the cetane number of diesel fuel by up to five points. A higher cetane rating means faster, cleaner ignition, giving more complete combustion, improved performance and smoother, quieter running. It is especially valuable when fuel quality is uncertain or during the cold season.

Purpose and specifications

This booster is designed for all diesel engines and is particularly helpful with inferior-quality fuel or in winter, when ignition can be sluggish. As a general-purpose additive it carries no vehicle-specific OEM approvals and can be used in any diesel vehicle. It promotes clean combustion, improves engine smoothness and makes cold starting noticeably easier.

• 0.250L container, sufficient to treat a full tank of up to 50 liters of diesel
• Improves cold-start behaviour and reduces ignition delay in low ambient temperatures
• Cleaner, more complete combustion reduces deposit formation in the combustion chamber
• Higher cetane number delivers better engine response and smoother power delivery

When to use / change?

Use this booster when you fill up with lower-grade diesel, before winter, or any time you want crisper cold starts and quieter running. Add the bottle to the tank before refueling, ideally every 5,000 km or with each suspect fill. It performs reliably in cold weather and across the engine's operating temperature range. Shelf life is approximately 5 years when stored sealed in a cool, dry place.

Frequently asked questions

What does raising the cetane number actually do?
It shortens ignition delay so the fuel burns more completely, giving smoother running, better performance and easier starting.

Is this useful in summer too?
Yes, it benefits any engine running on poor-quality fuel, though the cold-start advantage is most noticeable in winter.

Can it be combined with a system cleaner?
Yes, it works well alongside cleaning additives, but follow the recommended dosage for each product.

Suitable for: all diesel vehicles, especially useful for cars running on lower-quality or winter-grade diesel fuel. Always verify the exact approval against your vehicle's owner manual before use.