Frequently asked Questions

You will find the answers to some questions we are asked frequently, this information is updated regularly with new Q & As

Q, Once added to the diesel tank, for how long so Diesel Bug Treatment and Diesel Bug Complete remain effective (lifespan)

A, The Diesel Bug treatment and Diesel Fuel Complete will remain sufficiently active for over a year at both high and low temperatures.

Q, Does it matter which way round I use the additives?. I see on your site that you suggest we use the diesel injector cleaner first and then the diesel complete. If however it's used the other way round, are there any concerns or how badly does it impact the results?.

A, With regards to the Diesel Injector Cleaner, add this directly to your tank first, this is a one shot treatment. 100ml will treat 100 litres of fuel. With the diesel Fuel Direct Complete, add this to your tank as an after treatment to use a preventative measure when you next fuel up.

Q, If you buy the kit with the 3 different bottle (triple Pack) do you put it all in at once? How much do you add?

A, A triple pack offering a complete all-round fuel system package. It kills Diesel Bug, cleans the fuel system and protects the fuel. With the use of Diesel Bug Treatment, Diesel Injector Cleaner and Diesel Complete, assures you that your engine and fuel are fully protected. Add Diesel Bug Treatment (DBT) and Diesel Injector Cleaner (DIC) together, and then add Diesel Fuel Complete (DFC) as an after treatment to use as a preventative measure (next time you fill up) The dose rate is 100ml to 100 litres. Overdosing does not harm the engine.   

Q, I use the boat regularly and have the engine running about 2 hours a week. Do I need to add a fuel additive?

A, Due to the decrease in fuel quality and the consequences of getting diesel bug, I would always recommend using an additive. An all round additive such as Marine 16 Diesel Fuel Complete is a great product to prevent diesel bug and also keep your fuel and engine in great condition. 

Q, I have been using a different make of Fuel Additive but have been recommended Marine 16 on numerous occasions. IF I use another make will there be a problem?

A, Fuel additives tend to fall into 2 categories, enzymatic and biocidal. If you currently use an andenzymatic treatment then switching to a biocidal product such as Diesel Bug Treatment will activate the enzymatic one as this is the job of the Biocidal Product. If you currently use a biocidal treatment, then switching to another biocidal product will not cause any problems.   

Q, Does it make sense to change brands of diesel bug treatment every few years. Do the bugs get resistant after some time? Or do the manufacturers change the recipe periodically anyway?

A, The important thing when using a fuel treatment s that you ensure it is a full spectrum Biocide. This way, even if the bug mutates, you will still 'kill the bug'.

Q, We use about 15-20 litres of diesel per year in our small sailing cruiser. The fuel tank holds 50 litres so topping it up for winter storage is not practical. The diesel in the tank now is over a year old. What should we do for both winter storage and in regular use during the season to ensure the fuel remains good and usable?

A, The normal school of thought is that you must top the tank up for laying up for the winter. However with the decrease in fuel quality I wonder if this is the best course of action. If you are topping up your tank with fuel that will deteriorate over the winter then have you not defeated the objective. In your situation, I would does the tank with Marine 16 Diesel Fuel Complete. This will assure you that as your fuel ages, you will still achieve good performance from your motor. Also, Diesel Fuel Complete has a preventative dose of Diesel Bug Treatment in it as well so you are covered all round.