New Release: Petrol and Diesel Performance Fuel System Cleaners
We are happy to announce two brand new additions to our range of fuel system cleaners.

JLM Diesel Performance Fuel System Cleaner
Part No J02345
• Cleans the entire fuel system
• Maximises engine power and throttle response
• Significantly improves fuel economy
• Dissolves stubborn gums and varnish deposits
• Recommended for vehicles with driveability issues
JLM Diesel Performance Fuel System Cleaner is a professional-grade additive developed to tackle sluggish performance issues and restore lost power in diesel engines. Building on the proven base formula, this enhanced version goes further with stronger detergents and combustion enhancers that deliver a deeper, more aggressive cleaning action. It’s the ideal choice for vehicles suffering from reduced throttle response, higher fuel consumption, or minor smoke problems.
Powerful Cleaning Across the Entire Fuel System: This advanced cleaner penetrates the fuel system from injectors to combustion chambers, dissolving stubborn carbon, gum, and varnish deposits that ordinary additives leave behind.
Restores Engine Power and Throttle Response: By removing heavy build-up and improving combustion quality, the additive brings back smooth acceleration, sharper throttle response, and overall performance.
Improves Fuel Economy: Engines free from deposits burn diesel more efficiently. Regular use of JLM Diesel Performance Fuel System Cleaner helps reduce fuel consumption and operating costs.
Reduces Smoke and Emissions: Excess deposits contribute to incomplete combustion and visible exhaust smoke. This cleaner supports cleaner burning and helps engines run within emission limits for longer.
Ideal for Vehicles with Performance Issues: Unlike preventive additives, this formula is designed to solve problems, making it perfect for high-mileage cars, heavy-duty vehicles, or any diesel showing signs of power loss and inefficiency.
Diesel engines working under tough conditions such as urban stop-start driving, commercial use, or extended mileage, are more prone to severe deposit build-up. Over time, this leads to sluggish performance, poor fuel economy, and rising emissions. JLM Diesel Performance Fuel System Cleaner directly addresses these problems with a stronger cleaning package that restores engine health and responsiveness.
It’s especially suited for vehicles with common rail injection, turbochargers, or those regularly driven in demanding conditions where standard preventive cleaners are not enough.

JLM Petrol Performance Fuel System Cleaner
Part No. J03145
• Cleans the entire fuel system
• Maximises engine power and throttle response
• Significantly improves fuel economy
• Dissolves stubborn gums and varnish deposits
• Recommended for vehicles with driveability issues
JLM Petrol Performance Fuel System Cleaner is a high-strength additive developed for petrol vehicles showing signs of performance loss, rough idle, increased fuel consumption, or mild smoke. Building on the proven formula of JLM’s standard fuel system cleaner, this performance version delivers a deeper clean and a more powerful effect, targeting hardened deposits that interfere with combustion and throttle response.
Ideal for high-mileage engines, city-driven vehicles, or cars in commercial use, it’s the smart solution when a standard additive just isn't strong enough.
Deep Cleans the Entire Fuel System: This advanced formula uses extra-strength detergents and combustion enhancers to dissolve tough carbon, gum, and varnish deposits across injectors, intake valves, and combustion chambers.
Restores Engine Power and Throttle Response: By removing stubborn build-up, the additive helps recover lost performance, leading to sharper throttle response, smoother acceleration, and improved driveability.
Improves Fuel Economy: With the fuel system restored to optimal condition, combustion becomes more efficient, translating into measurable fuel savings.
Whether it’s sluggishness, hesitation, or poor idle, JLM Petrol Performance Fuel System Cleaner addresses these common symptoms caused by fuel system contamination.
This product is particularly effective for high-mileage cars, petrol engines used in urban traffic, taxis, delivery vans, or any vehicle subjected to frequent stop-start driving.
JLM Petrol Performance Fuel System Cleaner delivers results where regular additives fall short, making it the go-to product for restoring lost power and improving fuel efficiency. For professional technicians and drivers alike, it’s a powerful tool for petrol engine care that brings immediate, measurable improvements.