JLM Catalytic Exhaust Cleaner Petrol 250ml

Catalytic Exhaust Cleaner Petrol

250 ml / J03150
A new and unique formulation from JLM, the fuel additive experts, specifically engineered for petrol engines. The concentrated and powerful additive package will target all parts of the fuel, combustion and exhaust system

JLM Petrol Catalytic Exhaust System Cleaner contains a unique blend of additives including an octane booster and powerful cleaning additives that combine to give a deep and thorough clean of the entire fuel and exhaust system on petrol engines.

MOT Failure: One of the most common causes of MOT failure is due to poor emissions. A single treatment of JLM Petrol Catalytic Exhaust System Cleaner will, in most cases, quickly cure the original cause of the problem, reducing the emissions to an acceptable level and avoiding expensive repair charges.



  • Reduce emissions
  • Improves the performance of the catalytic converter
  • Increase Engine Performance 
  • Increase Efficiency
  • Save Money
  • Cleans injectors, carburettors and the entire fuel delivery system to keep them in optimal condition
  • Eliminates sticking valves
  • Prevents deposits of gum, varnish and sludge
  • Protects against corrosion
  • Eliminates rough idling and knocking
  • Cleans the Lambda sensor 

How to use

Suitable for all petrol engines with (or without) catalytic converter. Instructions: Pour the contents of the bottle into the petrol tank before filling the tank with petrol. For best results, carry out a test drive for some time at medium revs. For rapid results (e.g. for the MOT test), the product can be added to a small amount of petrol, 20 to 30 litres. For best results, allow the engine to run for at least 20 - 30 minutes at 2000 - 3000 rpm.

Dosage: One bottle is enough for 40 - 60 litres of petrol. For best results, use one bottle every 3000 miles.

Preventative Maintenance: Using JLM Petrol Catalytic Exhaust System Cleaner on a regular basis (approximately every 5000 miles) will help to maintain the fuel and exhaust system in good condition. This generally improves efficiency and performance and helps helps to prevent unnecessary and costly mechanical failures.

Where to buy

Find a local dealer in your area or buy this product online

In order to function properly, we use cookies on jlmlubricants.com. View our cookie policy. close