Save on Fuel. Restore Performance. Avoid Repairs.
JLM's Diesel Fuel System Cleaner products clean injectors, the turbo and the entire fuel system — in one simple tank top-up. No garage visit, no tools, no downtime.
Find Your Diesel Fix →
The JLM Diesel Fuel System Cleaner Range
Four additives. One mission: get your diesel breathing, burning and performing the way it left the factory. Pour the right JLM cleaner into a full tank of diesel — that's it.
Nagging Problem? JLM Has The Solution.
Match your symptoms to see how JLM cleaners restore your diesel.
The Problem
- Rough idling or hesitant acceleration
- Fuel consumption creeping up for no clear reason
- Engine knocking, or a rattly cold start
- That nagging feeling your diesel isn't running like it used to
- DPF warning lights and reduced power
- Excessive black smoke from the exhaust
✓ The JLM Solution
- Restored throttle response and smooth acceleration
- Reduced fuel costs — better economy from every tank
- Smooth, quiet driving with no knocking
- Restored performance — like a new engine
- Supports DPF regeneration and clears warning lights
- Cleaner emissions and passing MOT tests
Which Diesel Fuel System Cleaner is Right For You?
Match your symptoms to the right cleaner. Click any row to jump to that product.
| Product | Best For | How Often | Treats |
|---|---|---|---|
 Injector Cleaner |
Everyday maintenance | Every 5,000 km | Injectors, intake valves |
 Fuel System Cleaner |
Regular deep-clean of whole fuel system | Every 5,000 km | Injectors, fuel pump, intake valves, combustion chamber |
 Performance Cleaner |
Sluggish response, rising fuel use, light smoke | When symptoms appear | Injectors, fuel pump, combustion chamber (stronger) |
 Extreme Clean |
Full engine detox, DPF/turbo warning lights | When symptoms appear | Turbo, EGR, injectors, intake valves, DPF, exhaust |
Routine Protection for a Healthier Diesel
Make injector cleaning part of your routine. JLM Diesel Injector Cleaner cleans injectors and intake valves. Ideal for regular preventive cleaning to keep your engine running like new.
Complete Cleaning from Tank to Combustion Chamber
Built for drivers and workshops who wish to clean the entire fuel system. The JLM Fuel System Cleaner penetrates deep into injectors, the fuel pump, intake valves and the combustion chamber, then leaves behind a protective barrier.
More Power to Clean Stubborn Soot & Deposits
When throttle response feels lazy, fuel bills are climbing, or if you see a whisper of smoke — it's time for something stronger. Performance Fuel System Cleaner uses enhanced ingredients to dissolve stubborn carbon, gum and varnish.
The Ultimate All-In-One Diesel Detox
One bottle for maximum diesel cleaning. JLM Diesel Extreme Clean is engineered to clean, restore and protect the turbo, fuel system, EGR valve, DPF and exhaust in a single treatment.
Three Steps to a Cleaner Diesel
No garage visit. No tools. No downtime. Just pour and drive.
Choose Your Cleaner
Match your symptoms, or your maintenance routine, to the comparison table above.
Fill Up As Normal
Pour the bottle into a full tank of diesel at your next fuel stop.
Drive As You Would
The additive works as you drive — no change to your routine.
Feel The Difference
Smoother running and a cleaner engine from the inside out.
Trusted Worldwide Across Garages & Racetracks
JLM Lubricants is the official Liquid Tools partner of the FIA European Rally Championship.
"Used Extreme Clean on my BMW with a clogged DPF. Warning light gone after one tank. Incredible product."
"I use the Injector Cleaner every 5,000 km as preventative maintenance. Engine runs smoother and fuel economy improved noticeably."
"As a workshop owner, I recommend JLM to all my diesel customers. The Performance Cleaner is our go-to for sluggish engines."
Frequently Asked Questions
Your Diesel Deserves a Clean Restart
Shop the full JLM Diesel Fuel System Cleaner range and start driving cleaner today.