HIGHTEC CAT CLEANER is a multi-purpose additive that dissolves resin-like residues and carbon deposits throughout the fuel system, on the lambda (oxygen) sensors and inside the catalytic converter. These deposits reduce efficiency, raise emissions and can trigger fault codes. Regular use keeps the fuel system, sensors and catalyst clean, maintaining performance and helping prevent costly repairs.

Purpose and specifications

This additive suits all gasoline and diesel engines. It clears resinified residues and carbon build-up from the fuel system, frees lambda sensors so they read accurately, and cleans the catalytic converter to restore exhaust efficiency. As a fuel treatment it carries no vehicle-specific OEM approvals; one container is added to the tank before refuelling and treats up to 50 litres of fuel.

• 0.250L container sufficient to treat one tank of up to 50 litres of fuel
• Dissolves resinified residues and carbon deposits in the fuel system
• Cleans lambda sensors and the catalytic converter for accurate control
• Prevents costly repairs and helps keep emissions within limits

When to use / change?

Use it when emissions readings rise, when a sensor or catalyst warning appears, or as routine preventive care for the exhaust system. A practical routine is every 3,000 to 5,000 km or at each oil-service interval. Add the dose to the tank before refuelling so it circulates through the fuel system and exhaust path. It works across the engine's normal operating temperature range, and stored sealed away from heat and direct sunlight, shelf life is approximately 5 years.

Frequently asked questions

Can I use it in both petrol and diesel cars?
Yes. It is formulated for all gasoline and diesel engines.

Will it help a failing catalytic converter or lambda sensor?
If the problem is caused by carbon or resin deposits, regular use can restore function and help avoid expensive replacement.

How much fuel does one bottle treat?
One container is sufficient for up to 50 litres of fuel; add it to the tank before refuelling.

Suitable for: all gasoline and diesel vehicles with catalytic converters. Always verify the exact approval against your vehicle's owner manual before use.