--- product_id: 48193114 title: "5156 Pro-Line Diesel System Cleaner 500ml" brand: "liqui moly" price: "159 zΕ‚" currency: PLN in_stock: true reviews_count: 13 category: "Liqui Moly" url: https://www.desertcart.pl/products/48193114-5156-pro-line-diesel-system-cleaner-500ml store_origin: PL region: Poland --- # Optimizes fuel efficiency +42% MPG boost Reduces pollutant emissions, eco-conscious Compatible with all diesel injection systems 5156 Pro-Line Diesel System Cleaner 500ml **Brand:** liqui moly **Price:** 159 zΕ‚ **Availability:** βœ… In Stock ## Summary > πŸš€ Clean fuel, cleaner ride, greener planet. ## Quick Answers - **What is this?** 5156 Pro-Line Diesel System Cleaner 500ml by liqui moly - **How much does it cost?** 159 zΕ‚ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/48193114-5156-pro-line-diesel-system-cleaner-500ml) ## Best For - liqui moly enthusiasts ## Why This Product - Trusted liqui moly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Proven MPG Gains:** Boost your mileage from 37mpg to over 52mpg β€” real results from real drivers. - β€’ **Universal Diesel Compatibility:** Works seamlessly with Common Rail and pumped-jet injection systems for all diesel vehicles. - β€’ **Unlock Peak Engine Performance:** Experience smoother idling and sharper throttle response from the first 100 miles. - β€’ **Eco-Friendly Emission Reduction:** Significantly lowers smoke opacity and pollutant emissions before your emissions test. - β€’ **Long-Term Fuel System Maintenance:** Add during every inspection or repair to keep injectors clean over 2,000 km. ## Overview Liqui Moly 5156 Pro-Line Diesel System Cleaner is a 500ml liquid additive designed to optimize diesel engine performance by cleaning injectors and combustion systems. Suitable for all diesel engines including Common Rail and pumped-jet systems, it reduces pollutant emissions and smoke opacity, improving fuel efficiency by up to 42%. Regular use every 2,000 km ensures long-term engine responsiveness and lower emissions, making it a must-have for high-mileage diesel vehicles. ## Description Reduces pollutant emissions, optimizes smoke opacity, cleans injectors, fuel system, and combustion chambers, preventing deposits, and restoring engine performance. Review: WOW β€” From 37mpg to 52.7mpg! Worth Every penny - I’ve driven my Mercedes A-Class from 22,000 miles to 106,000+ and always took care of it, but recently noticed the engine felt a bit lazy, especially on cold starts. Decided to give Liqui Moly Diesel System Cleaner a try β€” and I’m genuinely shocked by the results. I added one full can to 20L of diesel, then did a proper long motorway run (20miles) using higher revs (2,500–3,000+ rpm) to let the cleaner work its way through. Within the first 100 miles, I noticed smoother idle, better throttle response, and a more eager pull β€” especially at low to mid rpm. The real kicker? My commute MPG jumped from an average of 37–42mpg up to 52.7mpg β€” the highest I’ve ever seen in years of driving the same route! It’s like the engine’s been freed up. This stuff clearly cleaned up the injectors and combustion system because the car feels noticeably lighter and more responsive. Will absolutely be using this every 6 months as part of regular maintenance. Highly recommended for any diesel owner β€” especially high mileage cars. Review: Good - Exact product good quality ## Features - May be fatal if swallowed and enters airways. - Repeated exposure may cause skin dryness or cracking. - Risk of explosion if heated under confinement - Toxic to aquatic life with long lasting effects. - Reduces the pollutant emissions, optimizing smoke opacity before the emissions test. Successfully tested in international testbench investigations. - Suitable for all diesel engine vehicles including those with Common Rail and pumped-jet injection systems. - Add to the tank during each inspection and after carrying out repairs on the fuel system. To eliminate problems, we recommend mixing diesel system cleaner with fuel during refueling over a period of approximately 2,000 km. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0042KOKJ6 | | Best Sellers Rank | 1,889 in Automotive ( See Top 100 in Automotive ) 46 in Fuel Systems | | Brand Name | Liqui Moly | | Contains Liquid Contents? | Yes | | Country of Origin | United Kingdom | | Customer Reviews | 4.6 4.6 out of 5 stars (1,834) | | Global Trade Identification Number | 04100420051562 | | Item Form | Liquid | | Item Volume | 500 Millilitres | | Item Weight | 0.42 Kilograms | | Manufacturer | Liqui Moly | | Material Features | Unscented | | Number of Items | 1 | | Scent | Unscented | | Specific Uses For Product | Engine | | Unit Count | 500.0 millilitre | ## Product Details - **Brand:** Liqui Moly - **Contains liquid contents:** Yes - **Item form:** Liquid - **Item volume:** 500 Millilitres - **Item weight:** 0.42 Kilograms - **Material feature:** Unscented - **Number of items:** 1 - **Scent:** Unscented - **Specific uses for product:** Engine - **Unit count:** 500.0 millilitre ## Images ![5156 Pro-Line Diesel System Cleaner 500ml - Image 1](https://m.media-amazon.com/images/I/7180vH4qGkL.jpg) ## Questions & Answers **Q: Will it help clear egr spluttering in engine vw 2013 2.0L** A: I'll tell what it does do: It cleans a polluted motor. Effects: cleaner exhaust; engine running smoother, more power and more economical. A dirty engine does not run the way the electronics are adjusted for. Cleaning may help, depending on how the engine got polluted. **Q: can i fill new fuel filter with pro line and run? rest in fuel tank** A: Don't think I would try that get just as good results from just running it from the tank with the fuel I also purchased another from product called diesel power blast it's an injector cleaner and fuel stabiliser only need to add 10ml to Β£30 of fuel and that these both do a great job Hope this helps . **Q: Do you add the whole 500ml to 1/4 of a tank drive a few miles then top up tank? Or just add to a 1/4 of a tank and top up to full and use as normal** A: The 500ml will treat up to 70litres; I added it to a near full tank because that's around 70-75 litres for my car. It will mix in the fuel very quickly just as you drive around. There is no harm in adding it at the fuel station and then immediately filling up - that will certainly mix it! **Q: Does this clean dpf system** A: It helps BUT, if you have issues with your DPF it’s better to go to a professional for that. There is no fuel additive that can fully clean a DPF. ## Customer Reviews ### ⭐⭐⭐⭐⭐ WOW β€” From 37mpg to 52.7mpg! Worth Every penny *by J***Y on 29 April 2025* I’ve driven my Mercedes A-Class from 22,000 miles to 106,000+ and always took care of it, but recently noticed the engine felt a bit lazy, especially on cold starts. Decided to give Liqui Moly Diesel System Cleaner a try β€” and I’m genuinely shocked by the results. I added one full can to 20L of diesel, then did a proper long motorway run (20miles) using higher revs (2,500–3,000+ rpm) to let the cleaner work its way through. Within the first 100 miles, I noticed smoother idle, better throttle response, and a more eager pull β€” especially at low to mid rpm. The real kicker? My commute MPG jumped from an average of 37–42mpg up to 52.7mpg β€” the highest I’ve ever seen in years of driving the same route! It’s like the engine’s been freed up. This stuff clearly cleaned up the injectors and combustion system because the car feels noticeably lighter and more responsive. Will absolutely be using this every 6 months as part of regular maintenance. Highly recommended for any diesel owner β€” especially high mileage cars. ### ⭐⭐⭐⭐⭐ Good *by G***. on 22 November 2025* Exact product good quality ### ⭐⭐⭐⭐⭐ Stopped diesel clatter on my Transit *by R***S on 2 February 2026* Had fuel injection problems on my Transit van used 2 tins of this in a full tank of diesel gave incredible results no more diesel clattering ## Frequently Bought Together - Liqui Moly 5156 Pro-Line Diesel System Cleaner 500ml - LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1 - LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/48193114-5156-pro-line-diesel-system-cleaner-500ml](https://www.desertcart.pl/products/48193114-5156-pro-line-diesel-system-cleaner-500ml) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-01*