Fuel & Oil Additives
€9.59
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
*Online exclusive. Exclusions apply.
€9.59
€8.70
- Size : 425ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
*Online exclusive. Exclusions apply.
€8.70
€8.10
- Size : 400ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
*Online exclusive. Exclusions apply.
€8.10
€6.50
- Size : 300ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€6.50
€18.70
- Size : 400ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€18.70
€14.40
- Size : 250 ML
- Dosage: Multi-Shot
- Suitable For: E10 Fuel Treatment
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€14.40
Best seller
€12.00
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
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€12.00
€19.80
- Size : 500ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€19.80
€30.00
- Size : 250ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€30.00
€7.20
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
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€7.20
€30.00
€26.10
save €3.90
- Size : 750ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€30.00
€26.10
save €3.90
€19.20
- Size : 500ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
*Online exclusive. Exclusions apply.
€19.20
€19.10
- Size : 400ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€19.10
€5.95
- Size : 275ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€5.95
€9.60
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€9.60
€7.20
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
*Online exclusive. Exclusions apply.
€7.20
€4.80
- Size : 400ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€4.80
€19.20
- Size : 375ml
Extra 10% off Motoring*
When you spend €30
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€19.20
€4.00
- Size : 300ml
Extra 10% off Motoring*
When you spend €30
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€4.00
€19.80
- Size : 450ml
Extra 10% off Motoring*
When you spend €30
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€19.80
€8.99
- Size : 325ml
Extra 10% off Motoring*
When you spend €30
Use code: HOLIDAY10 in basket
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€8.99
€3.95
- Size : 125ml
Extra 10% off Motoring*
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€3.95
€3.95
- Size : 90ml
Extra 10% off Motoring*
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€3.95
€27.60
€20.95
save €6.65
- Size : 750ml
Extra 10% off Motoring*
When you spend €30
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€27.60
€20.95
save €6.65
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Some of us want to eke a little more performance out of our engines. Fuel additives and oil additives give your engines a little extra. Oil additives improve the smoothness of your engine, giving your existing oil a boost. Fuel additives work can improve efficiency and power, lowering emissions and maintaining your engine. At Halfords, we’ve got a large stock of fuel and oil additives suitable for diesel and petrol cars and vans.
We carry engine additives from well-known brands including Millers, Redex and Wynns that have been tested to perform. Online you can compare products and read user reviews to get an inside view on what works best.
Our complete range of fuel and oil additives and internal cleaners are part of our engine oils and fluids, all of which you can find online or instore. Spend over €40 and you’ll qualify for free delivery.
Before using a fuel additive, we recommend that you use an engine cleaner to rid your engine of any nasties that might have built up. As well as engines, we’ve got specific cleaners for fuel injectors and carburettors, EGR cleaner and catalytic converters that will have your car purring in no time. They’re pretty simple to use, but we advise you to follow all instructions to the letter to avoid causing any damage to your vehicle.