Diesel Fuel & Tank Cleaning Services
Clean Fuel Marine removes sludge, water, and contaminants from storage tanks of all sizes using advanced, non-invasive techniques. Our process minimizes downtime and ensures your tanks are restored to optimal condition.
Fuel Polishing & Filtration
Don’t let degraded fuel cost you time and money. We filter, separate, and clean your diesel—removing microbial growth, particulates, and water—to bring it back to spec.
Fuel Testing & Analysis
We provide comprehensive testing services to evaluate fuel quality, stability, and contamination levels—so you know exactly what’s flowing through your systems.
Fuel polishing and tank cleaning
Not all Cleaning Systems are the same.
Modern day diesel has undergone significant changes to meet stricter environmental regulations, these changes have introduced new challenges for fuel maintenance and way we deal with these issues.
Clean Fuel Marine has adapted our equipment to these changes and the way we clean your tank and fuel.
Many fuel polishing systems remove much of the water build up in the bottom of your tank and diesel bug itself, but leaves water saturated in your fuel and other contamination behind in the bottom of your Fuel tank.
We're on T.V
Last year channel 4 approached us about being on series 2 of Narrow Escapes.
We cleaned the Angry Boaters fuel and tank in preparation for Gloucester pilots to take him and his boat down the river severn.
We’re on Episode 24 on Season 2 It’s available on line

Clean Fuel Marine does not just "Fuel Polish"
We clean your tank and remove the water saturated in your fuel.






Our equipment Removes
- Water saturated in your fuel by filtering to 100 ppm.
- Bacteria and contamination by filtering to 1 micron.
- Rust using a magnetic filter.
We clean your tank and remove the water saturated in your fuel.

Signs Of Contamination
- Reduced power and efficiency.
- Smoky and smelly exhaust.
- Blocked Filters.
- Diesel heating failure.
Just adding Fuel additive and changing the fuel filters is not the answer.

The Benefits Of Clean Diesel
- More reliability.
- More fuel efficiency.
- Less changing of fuel filters.
- Less smoky exhaust.
- Better for your engine.
Clean tank and diesel can save you money!

Our Services
We offer our cleaning services for all users of both red & white diesel and heating oil.
- Marine
- Agricultural
- Construction
- Heating Oil
- Storage tanks





EXCELLENT Based on 20 reviews Andrew Garratt2025-09-12Trustindex verifies that the original source of the review is Google. Excellent service, great price.Highly recommended, will use again in a heartbeat. Chris Walton2025-09-10Trustindex verifies that the original source of the review is Google. Brilliant service and great value for money. A thorough job which solved our problem. Knowledgeable and experienced. Lovely people too! Highly recommended. Colin Liddell2025-09-01Trustindex verifies that the original source of the review is Google. Jason was highly recommended to us. I contacted him and he came out straight away and took a sample. I had the fuel cleaned and tank vacuumed. He was very thorough and gave me helpful advice. Class 1 service and I would highly recommend him. Neil Turner2025-08-22Trustindex verifies that the original source of the review is Google. Contacted Jason to do a fuel tank inspection on our narrowboat whilst on the Kennet & Avon prior to a last minute decision to come up the Bristol estuary. Arrived the next day, did a fantastic job - our diesel and tank were near enough clean, so no polishing needed. Spent lots of time with us giving advice and recommendations. The prices were transparent and reasonable. No unnecessary work was done - a true professional. Will be using him again when we need any work done on our narrowboat. Ian McBride2025-08-12Trustindex verifies that the original source of the review is Google. If you need tank cleaning/ fuel ‘polishing’ look no further! Our 35 year-old narrowboat broke down for the first time in its life because of heavily contaminated fuel in its 350-litre tank. Taking out 25 litres of diesel/ water (which looked like Coca Cola) and two changes of filters got it back to its home mooring, but it wouldn’t tick over and was clearly in trouble. Jason came to our rescue a few days later - great expertise, four hours + conscientious work, three changes of filters on his equipment, 50L+ of irretrievable diesel disposed of: advice freely given. Very small amount of diesel bug and a very large amount of gunge and solids cleaned from the tank bottom. Our Russell Newbery back on form after another filter change and we couldn’t be more pleased, or recommend Clean Fuel Marine highly enough. Before and after pictures of our fuel attached. Andy Hart2025-08-01Trustindex verifies that the original source of the review is Google. Jason came at short notice to inspect the fuel in our narrowboat before we did an estuary trip. He provided an excellent service, gave helpful advice on fuel care and additives, and was very friendly. Would certainly be very happy to use him again. Diane Colbeck2025-07-07Trustindex verifies that the original source of the review is Google. tried to contact anyone that could remove water from a Nb diesel tank and Jason rang us to say our details had been passed to him- excellent communication from start to finish - detailed explanation of the entire process+ prices .. will definitely recommend his services and pass on his details Jeremy Parker2025-06-14Trustindex verifies that the original source of the review is Google. I had a very positive visit from Jason this week. We knew we had a water/diesel bug problem and having arranged a visit, Jason arrived promptly and started the fuel cleaning. As a scientist I was interested in the process, and can confirm excellent practice both in terms of filtration and fuel drying. We had clean and clear fuel after three hours - problem solved! Quotation was pretty accurate, just a couple of additional filters required so no extra cost surprises. Excellent and service and I'm very happy to recommend. Stephen Barton2025-05-14Trustindex verifies that the original source of the review is Google. Excellent & thorough service, Very friendly & knowledgeable - thoroughly recommend. 5 stars!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more