Hydra Heating Oil Additive
 Hydra Heating Oil AdditiveHydra Heating Oil Additive 

Hydra Heating Oil Additive

  (13 Reviews)
Pack Size:  
Our Price:  £9.45(Inc. 20% VAT)(£7.88 Exc. VAT)

Brand:  Hydra

  • Contains heavy duty detergents, cleans burner nozzles and injectors.
  • Removes accumulated soot deposits, solubilises sludge in tanks.
  • By improving combustion reduces oil consumption by up to 10%.
  • Ideal for Aga , Rayburn and Range Master cookers.
  • 250ml treats up to 1,250 Litres.
  • 500ml treats up to 2,500 Litres.

Vapourising burners as found in Aga, Rayburn and Range Master cookers are very sensitive to carbon and soot build-up, it is not unknown for them to soot up every 4-6 weeks. Hydra Heating Oil Additive prevents these deposits from building up, keeping the burners free of soot between services.


For Heavily Contaminated Fuel System
Dilution rate: 1:2500 i.e. 100ml treats 250 litres of fuel.

Refuelling Dose to Protect Clean Fuel System
Dilution rate: 1:5000 i.e. 100 ml of treats 500 litres of heating oil. Treat oil tanks every time they are topped up.


Most heating boilers are of a pressure jet design which use precise fuel metering through narrow shaped spray channels. Injector deposits mean reduced fuel flow. Whereas 100% clean injectors give optimal fuel spray pattern. Each finely dispersed particle of fuel is surrounded by many molecules of air (20% oxygen) ensuring a more complete burn. Which in turn gives you better fuel economy, reduced emissions and improved boiler durability.


Hydra Heating Oil Additive contains heavy duty detergents prevents the formation of and removes existing deposits from burners and injectors and heat exchangers. In the oil tank safely dissolves years of corrosive sludge back into the fuel where it's burned away. While creating a protective barrier to stop the sludge gunk from coming back!


Using Hydra Heating Oil Additive upgrades standard heating oil to a premium standard for heating oil. The boiler fires easier with reduced soot and fuel consumption. Better combustion means less deposits on burners and heat exchanger.


All our products are manufactured to the highest international specifications at our UK plant.

Average Rating (13 Reviews):  
Write a Review and share your opinions!

Heating Oil Addative
Tuesday, 25 June 2019  | 

Good price & very quick delivery, time will tell just how good it is.

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17 of 17 people found this review helpful.

Good service & product
Thursday, 16 May 2019  | 

Received good advice about what type of additive to buy, and I have noticed that our boiler has not needed any reset for quite some time. Will definitely buy the additive again next year when filling the tank.

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7 of 7 people found this review helpful.

Appears to work!
Tuesday, 16 April 2019  | 

Excellent service, product appears to work!
I'm just ordering my second bottle.

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7 of 7 people found this review helpful.

Hydra Oil Additive
Tuesday, 6 November 2018  | 

Good product works well with my Rayburn

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5 of 5 people found this review helpful.

Great Product
Thursday, 19 April 2018  | 

Added this to my oil tank as was having trouble with oil flow to my boiler, very happy and confident with this Hydra Heating Oil Additive. Will purchase again when oil tank needs filled up.

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20 of 20 people found this review helpful.

Thursday, 15 March 2018  | 

Great product ,time will tell if it protects my system,but like all of the other products I have used from this company ,it will,super service and speedy deliver

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5 of 5 people found this review helpful.

Excellent Product
Friday, 9 March 2018  | 

|Filled the oil tank up in December and added Hydra Lubricity Booster. The heating has been in use 12 hours per day since then, and more than half a tank left! So it saves fuel. When the engineer overhauled the boiler, he gave me Hydra's address and advised to use it. Glad I took his advice!

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20 of 20 people found this review helpful.

heating oil additive
Saturday, 23 September 2017  | 

Fast delivery, package OK. If it's as good as Hydra's other products I've used it will be excellent. Waiting for next tank refill to use it

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1 of 1 people found this review helpful.

Best Ever Used
Tuesday, 17 January 2017  | 

I have had oil fired boilers for over 40 years now. During that time I have tried quite a few of the additives on the market, none of which were 100% successful. However I have now been using the Hydra Heating Oil Additive for over 2 years.
We buy our oil from different suppliers, as the oil prices keep changing, the company that was cheapest last time is often now the most expensive.
Also the quality of the heating oil we receive varies a lot. Without adding this product, itís guaranteed that my boiler shuts down after every oil delivery.
I always put in a bottle of this before the tank is filled and I have yet to have any of the issues I've had in the past with a new delivery clogging the filter.
I also service my boiler each year so I have seen the condition of the burners before and after using this product - the burners are definitely a lot cleaner since I started using this.
I'm not sure of the science behind the product but as a heating oil additive itís the best Iíve ever used.

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18 of 19 people found this review helpful.

Great Product.
Tuesday, 25 October 2016  | 

My Aga burner was choking up with soot every 4-6 weeks, since using this product my Aga only needs servicing once per year doesn't work properly without it.

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10 of 10 people found this review helpful.

Read all 13 customer reviews...


pdf Datasheet (Hydra Heating Oil Additive) - Click here

Ques : Is this use for putting straight into home heating oil tank which feeds the central heating boiler only ?

Ans. Yes, Add Hydra heating oil additive straight in to the oil tank in correct dilution then top up with new fuel. Please make sure Fuel tanks being treated should be at least 10% full.

Ques : I've just replaced my oil tank but although a lot of sludge was removed some contaminated oil was transferred back to the new tank. If I'm adding the Hydra Heating Oil Additive to the fuel do I need to add a biocide additive as well our will the Heating Oil Additive do both jobs.

Ans. To play safe we recommend you to add the biocide Hydra FuelPlus as well.

Ques : Can you please advise if the Hydra Heating Oil additive is suitable for use in a solid fuel Rayburn stove that was converted to oil using a Don burner? The burner is not a vaporising burner, but a gravity feed oil drip. I do know that some types of additive are not suitable for this type of burner and just wondered if you had encountered this problem before? Thanks

Ans. This will still work with your type of burner.

Ques : Hi, is the amount of heating oil additive critical ie if I buy some? Is it possible to add too much?

Ans. No. If you overdose it is OK.

Ques : Hi. Can I just check this is for kerosene? Also, why two lids? Thanks

Ans. Yes. One is measuring cylinder & other one is direct pouring.

Ques : Old Rayburn with wick burners does your additive cause any problems with these burners.

Ans. No, it will work OK with these.

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