Marine 16 Diesel Bug Treatment HP

Diesel in the UK, either red or white, contains a high percentage of Biodiesel. Bio-diesel fuel causes two significant issues that can stop any marine diesel. We now see an alarming increase in diesel bugs that clog up pref-filters, leaving significant sludge in the fuel tank of most boats. Today we also see diesel separating into its constituent parts after being stored for about 3 months. This leads to injector failure and wear in the bores of any diesel engine.

Modern diesel has a shelf life of 3 months. We are seeing increased cases where diesel separates into its constituent parts, causing injectors to fail due to the Tar content dropping out and blocking the injector tips, causing the injector to drip fuel into the cylinders and engines refusing to start. Marine 16 Complete is therefore the only treatment recommended for leisure craft of all sizes. Only fill your tank with enough fuel to last and leave your tank empty or near empty during the winter.

Only use Marine 16 Complete during the season. Marine 16 Complete will prevent diesel bug and keep the diesel fuel from separating out in the tank. Dose at 100 ml per 100 litres of fuel. 

Run Diesel injector cleaner through your engine at least once a year. Dose 100 mill for a small yacht engine under 75hp, use 500 mill for single and twin engines on a motorboat up to 40ft and use 1000 mill for larger craft and commercial fishing boats with large tanks. See bottle for accurate dosing rates for your application.

Marine 16 Diesel bug treatment can be used if you are treating or preventing microbial contamination ("diesel bug") rather than using the multi-functional Marine 16 Compete fuel complete additive.

Dose at the following rates if you have diesel bug:

Regular preventative use: 100 ml per 2,000 litres of fuel.
Mild contamination: 100 ml per 500 litres of fuel.
Severe contamination/eradication: 100 ml per 100 litres of fuel.

How to manage your fuel and fuel tank.

• All diesel should be treated with a diesel fuel bug preventative treatment that can cope with new Bio-diesel such as Marine 16 Complete


• Fuel tanks should also be treated with a bug killer such as Marine 16 Diesel Bug Treatment, first, if you have evidence of diesel bug being present


• An injector cleaner should be used periodically, such as Marine 16 Diesel Injector cleaner


• Tanks should be left empty during any prolonged storage period


• Diagnostic equipment from Volvo Penta and Yanmar should be used yearly to check injector performance.


• We are available to discuss any issue that you may have with your yacht or motorboat diesel engine and treating with Bug Killer

Modern diesel has about a 3-month shelf life. If you see black specks or black sludge in your pre-filter, it may be a live or dead bug or tar due to the diesel starting to separate. Dead bug deposits will wipe off easily, whilst tar deposits may leave an oily deposit.