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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.

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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.

\r\n\r\n

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.

\r\n\r\n

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.

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Unfortunately, the battery suitable for your vehicle make and model is not available to order online. Our garages have access to more car batteries! Simply book a battery check and one of our technicians will check and order the right battery for you.

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Fuel Additives & Cleaners

71 results
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Wynn's
£6.29
Only £5.98 with Motoring Club premium
View details
View details
Only £5.98 with Motoring Club premium
View details
Cataclean
£17.49
Only £16.62 with Motoring Club premium
View details
View details
Only £16.62 with Motoring Club premium
View details
Cataclean
£17.49
Only £16.62 with Motoring Club premium
View details
View details
Only £16.62 with Motoring Club premium
View details
Best Seller
Wynn's
£12.49
Only £11.87 with Motoring Club premium
View details
View details
Only £11.87 with Motoring Club premium
View details
Redex
£4.99
Only £4.74 with Motoring Club premium
View details
View details
Only £4.74 with Motoring Club premium
View details
Wynn's
£8.29
Only £7.88 with Motoring Club premium
View details
View details
Only £7.88 with Motoring Club premium
View details
Wynn's
£7.49
Only £7.12 with Motoring Club premium
View details
View details
Only £7.12 with Motoring Club premium
View details
New
STP
£5.99
Only £5.69 with Motoring Club premium
View details
View details
Only £5.69 with Motoring Club premium
View details
Wynn's
£12.99
Only £12.34 with Motoring Club premium
View details
View details
Only £12.34 with Motoring Club premium
View details
Redex
£3.29
Only £3.13 with Motoring Club premium
View details
View details
Only £3.13 with Motoring Club premium
View details
Millers
£14.79
Only £14.05 with Motoring Club premium
View details
View details
Only £14.05 with Motoring Club premium
View details
Redex
£5.29
Only £5.03 with Motoring Club premium
View details
View details
Only £5.03 with Motoring Club premium
View details
Wynn's
£8.49
Only £8.07 with Motoring Club premium
View details
View details
Only £8.07 with Motoring Club premium
View details
STP
£14.79
Only £14.05 with Motoring Club premium
View details
View details
Only £14.05 with Motoring Club premium
View details
Wynn's
£7.99
Only £7.59 with Motoring Club premium
View details
View details
Only £7.59 with Motoring Club premium
View details
Wynn's
£6.29
Only £5.98 with Motoring Club premium
View details
View details
Only £5.98 with Motoring Club premium
View details
Wynn's
4.3 / 5 (210)
£8.79 £8.29 save 6%
This product is only available to click & collect in stores nearby to you due to age restrictions on delivery.
£8.79 £8.29 save 6%
Only £7.88 with Motoring Club premium
View details
View details
Only £7.88 with Motoring Club premium
View details
Top Rated
Wynn's
£7.49
Only £7.12 with Motoring Club premium
View details
View details
Only £7.12 with Motoring Club premium
View details
Slick 50
£25.99
Only £24.69 with Motoring Club premium
View details
View details
Only £24.69 with Motoring Club premium
View details
Dipetane
£13.29
Only £12.63 with Motoring Club premium
View details
View details
Only £12.63 with Motoring Club premium
View details
Redex
£9.49
Only £9.02 with Motoring Club premium
View details
View details
Only £9.02 with Motoring Club premium
View details
Wynn's
£9.99
Only £9.49 with Motoring Club premium
View details
View details
Only £9.49 with Motoring Club premium
View details
Wynn's
£14.29
Only £13.58 with Motoring Club premium
View details
View details
Only £13.58 with Motoring Club premium
View details
Holts
4.8 / 5 (51)
£3.99
This product is only available to click & collect in stores nearby to you due to age restrictions on delivery.
£3.99
Only £3.79 with Motoring Club premium
View details
View details
Only £3.79 with Motoring Club premium
View details
Displaying   24   of   71   products
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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.