Fuel Additives

At Estuary Oils we have a range of tried and tested fuel additives to improve the performance of your kerosene oil.

Fuel Additives | Estuary Oils

ANTI THEFT - Estuary Oils is the only company that has included an anti-theft green dye in their additive to combat fuel theft. We will also apply a sticker to your tank to let people know that the kerosene has a marker dye in the oil, which will help to deter the fuel being stolen and being used as a motor fuel. It also assures you that your additive has been included in your delivery.

SureChar Cooker Additive

Estuary Oils are proud to announce their newly designed specialist fuel additive for use in our domestic range-style cooker and boilers, as well as vaporising burners using kerosene. It is formulated to improve the ‘burn quality of the fuel.

We have found that domestic kerosene regularly does not match up to the Char Values that it has the potential to reach. Though it can reach an upper limit of 20mg/kg, many fuels we tested in the field were reaching anywhere between 16-30mg/kg.

The use of our SureChar additive lowers the Char Value of your kerosene, allowing it to burn cleaner and for longer. This reduces carbon build-up in your boiler or range, improves the performance and increases controllability of your heat.

Each 200ml bottle treats 1,000 litres of heating oil.


  • Lowers Char value
  • Reduces build-up of carbon deposits and soot
  • Inhibits growth of deposits in fuel storage tanks
  • Minimises the potential for fuel tank corrosion
  • Increases the fuel shelf life
  • Reduces service problems

All SureChar branded products are available in a range of sizes up to 1,000 litres.

Ecotherm Premium Blue

The additive pack comprises of several components to tackle a wide range of common problems with standard domestic heating oil. These include the corrosion of metal storage tanks and associated pipework, fuel degradation, the adverse effects of fuel interaction with copper containing fittings and pipework and the build-up of deposits in storage tanks. With the Estuary Premium Heating Oil Additives all of these problems are guarded against.

A 200ml bottle treats 1,000 litres of heating oil.


  • Lowers carbon emissions
  • Stabilises fuel increases its shelf life
  • Inhibits sludge formation
  • Reduces deposit build up around nozzles and on
  • heat exchanger surfaces
  • Reduces service problems
  • Improves system efficiency

All Estuary branded products are available in a range of sizes up to 1,000 litres.

Estuary Gas Oil Extra

Estuary Gas Oil Extra allows you to run your modern diesel engines calibrated on EN590 DERV on red diesel, using an innovative gas oil additive which also compensates for some of the detrimental effects of a higher FAME content e.g. tendency for water pick-up. The product will additionally enhance the performance of older vehicles.

The latest gas oil specifications, particularly the increase in the allowable FAME (biodiesel) content and the reduction in sulphur content, can cause negative effects when used in older engines and machinery. However, our Estuary additive counters these negative effects and allows you to use red diesel safely in your agricultural and horticultural machinery, construction equipment, airport vehicles and fork lift trucks.

Many engine manufacturers now recommend the use of upgrade additives when red/green diesel is used, and as our product is formulated from recognised fuel additive components and should not void an engine manufacturer’s warranty.

Estuary Gas Oil Extra is added to fuel at the rate of 1 litre of additive to 3,000 litres of fuel.


  • Increased cetane number benefits
  • Easier starting
  • Increased pulling power
  • Smoother power delivery
  • Reduced visible emissions (smoke)
  • Improved combustion efficiency
  • Aligns with modern engine calibrations

Increased fuel lubricity benefits

  • Compensates for sulphur reduction
  • Protects against premature wear in fuel pumps and fuel injectors
  • Reduces friction

Enhanced water resistance benefits

  • Prevents emulsions forming and resultant filter blockages
  • Keeps water out of the fuel

All Estuary Oils branded products are available in a range of sizes up to 1,000 litres.

Estuary Diesel Power Restorer

Estuary Oils are pleased to introduce a specially formulated fuel additive to bring fuel flow and engine power back to optimum levels quickly. The additive is designed for use in diesel engines, and works by breaking down and dispersing hard lacquers and internal diesel injector deposits (IDID).

Modern diesel engines use highly precise injection technology to help deliver optimum driving performance efficiently and with reduced emissions. Over time, deposits can build up in diesel fuel injection systems - reducing engine power, especially in the presence if biodiesel components. The deposits can be very thin layers of lacquer or metal salts stuck tenaciously to critical engine parts that restrict fuel flow.

Symptoms of such problems include noticeable reduction in power, engine misfires at idle and power surges.

The additive is used ‘online on a running engine and is typically added as part of a routine service.

One 200ml bottle of Estuary Diesel Power Restorer treats 100 litres of Diesel


  • Restores power that can be lost in modern diesel engines
  • Problems resolved with minimal downtime
  • Works within one tankful of fuel
  • Potential fuel economy benefit

All Estuary branded products are available in a range of sizes to 1,000 litres.

Talk to the Estuary Oils team - we are an independent family business, here to help keep your family safe and warm.
Call Now on 01291 422 656 or 01594 825 130 or 02920 887 973
Andrew:  07887 777 752
David:     07976 091 307
Dean:      07449 635 635
Ashley:   07966 588 165
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