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
- Diesel heating failure.
- Blocked Filters.
- Reduced power and efficiency.
- Smoky and smelly exhaust.
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.
A 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





Customer Reviews
EXCELLENT Based on 25 reviews Posted on JMTrustindex verifies that the original source of the review is Google. Wow …what an amazing customer service experience !!!! I am a retired mechanical engineer and so pleased there are quality, experienced, engineering companies like Clean Fluid Marine out there doing a first class engineering job and taking it to the next level and repairing / investigating other mechanical issues you may have while waiting for their very efficient cleaning system to complete its cleaning cycles …quite exceptional service ….highly recommend Clean Fuel Marine….also exceptional value, by far the the best price I could see which was a bonus !!!Posted on Roger de BeaufortTrustindex verifies that the original source of the review is Google. Father & Son, plus tea and biscuits plus 3 hours of solid work! Both carried out the work with no complains except when I was late with the tea and biscuits, dad only. The tank was a 300ltr fuel tank at the back of the Narrow Boat. All equipment used was in good condition and all debris was taken away and I was left with a sample bottle of the fuel cleaned as well as a certificate to confirm that the tank had been cleaned.Posted on JacquelineTrustindex verifies that the original source of the review is Google. I had a lot of issues with my filters and was told that I had a pretty grungy tank, so I called Jason and he came out with his son Joe. It took about 3 or so hours and they were very thorough, explaining what they were doing, how the system cleans the diesel and the tank etc. They were very helpful, very friendly and I would highly recommend them. Thank you both.Posted on Mark GeddesTrustindex verifies that the original source of the review is Google. Great service from Jason & his Son Joe. I have just had my fuel Tank cleaned on my Widebeam by them. They were really helpful & Knowlegable. They went above & beyond to help. I would highly recommend Clean Fuel Marine.Posted on MICHAEL MCCULLOCHTrustindex verifies that the original source of the review is Google. Jason did a very thorough job of cleaning the fuel system especially the tank. This saved 200 litres of fuel and also resolved the problem that I have had for about a year. Very professional service and very knowledgeable advice. Thanks to both. MikePosted on Andrew GarrattTrustindex verifies that the original source of the review is Google. Excellent service, great price.Highly recommended, will use again in a heartbeat.Posted on Chris WaltonTrustindex 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.Posted on Colin LiddellTrustindex 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.Posted on Neil TurnerTrustindex 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.Posted on Ian McBrideTrustindex 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.