Cars, Vans & 4×4’s

Fuel catalyst technology improves fuel quality to give fuel efficiency benefits in road vehicles



Fuel catalyst technology brings about smoother and more willing performance which is generally most noticeable in the case of low-powered engines. Although the technology works equally well with any engine it is generally less noticeable in engines where there is already so much power that much of it cannot be used


Accurate measurement of fuel consumption is far more complex than most people appreciate. However, when the technology is tested to meticulous procedures that account for the many variables, in typical cases improvements between 5% and 12% are found after a sufficient period of engine operation (typically 2,000 miles for cars and 4,000 or 5,000 for heavy diesel vehicles)

Ability to use a lower grade of fuel without loss of performance

People paying extra for premium grades of fuel at the pumps have reliably been able to switch to cheaper lower octane grades with no loss of performance (indeed in many cases significant gains) by fitting fuel catalysts. A perfect example of this was when people used Carbonflo to let older leaded-only engines run on unleaded, and in case after case after case it was found that engines that normally could not use unleaded at all would run better than ever on unleaded with Carbonflo

No further need for most liquid fuel additives

Liquid additives are marketed to variously boost octane values, preserve the quality of fuel in storage, clean fuel systems, allow ‘leaded-only’ engines to use unleaded, and so on. However Carbonflo performs these functions at a modest one-off cost


If emissions are checked before fitting the catalyst, they can be expected to show significant reductions if re-checked under ‘like-for-like’ comparative conditions after fitting the catalyst. This is especially the case following a sufficient period of engine running with the catalyst to allow for removal of carbon build-up from within the combustion chamber

Cleaner running engines

When engines (or turbos for example) have needed to be stripped down after significant periods of running with the catalyst, very markedly reduced carbon deposits than the norm have consistently been found

Reduced waxing, gumming, and ‘fuel bug’

Due to the action of the catalyst in breaking down the water content of fuel into hydrogen and oxygen, very significantly reduced problems due to ‘water in fuel’ have been experienced.

Units last 250,000 miles or more

Normally you would only have to fit Carbonflo once as the technology lasts for 250,000 miles or more.

unit fitted


Fitting Carbonflo in the tank can work extremely well with small engines and can work extremely well with large engines.

In many modern vehicles however tank units can be hard to fit so we recommend use of ‘in–line’ units. In most cases these can be ‘plumbed’ into the fuel line between tank and engine by a qualified technician in around an hour.


  • Fuel catalyst benefits can take 50 operating hours to fully materialise in automotive applications and longer in heavily sooted engines
  • Results from case to case vary due to factors from type of fuel to age and type of engine to operating conditions and others
  • This technology is not intended or claimed to overcome existing engine or electrical faults
  • The most marked early results tend to occur in older vehicles due to removal of carbon deposits in wellused engines. In new vehicles there is no carbon to remove however fuel catalysts can prevent carbon from ever accumulating therefore the longer-term benefits are as valuable

Carbonflo fuel catalyst technology