Fuel Additives & Cleaners

94 results
Sort by:
Sort by
Price Drop
Halfords
Halfords AdBlue 10L 159 views today
4.6 / 5 (1362)
  • Size : 10 Litres
£12.50 £9.99 save £2.51
+
we Fit from £5.00
Price Drop
Wynn's
Wynns Formula Gold Diesel Treatment 500ml 159 views today
£16.00 £13.79 save £2.21
Price Drop
Cataclean
Cataclean 500ml 159 views today
4.5 / 5 (146)
  • Size : 450ml
£15.99 £15.79 save 1%
Price Drop
Millers
Millers Diesel Power Ecomax 500ml 159 views today
4.7 / 5 (205)
  • Size : 500ml
£13.99
Price Drop
Redex
Redex DPF Cleaner 250ml 159 views today
4.6 / 5 (41)
  • Size : 250ml
£10.00 £6.49 save £3.51
Price Drop
Redex
Redex Fuel System Cleaner Diesel 1L 159 views today
4.8 / 5 (28)
  • Size : 1 Litre
£12.99 £11.49 save £1.50
Price Drop
Halfords
Halfords AdBlue 3.5L 159 views today
4.7 / 5 (142)
  • Size : 3.5 Litres
£6.50 £4.99 save £1.51
+
we Fit from £5.00
Carlube
Carlube DPF Cleaner Double Concentrate 159 views today
4.4 / 5 (23)
  • Type: Disel Treatment & Additives
  • Size: 300ml
£8.49
Price Drop
Wynn's
Wynns Engine Flush Petrol and Diesel 425ml 159 views today
£5.50 £4.49 save £1.01
Price Drop
Bradex
Bradex Easy Start 300ml 159 views today
4.8 / 5 (77)
  • Size : 300ml
£4.49
Halfords price drop icon

100s of prices cut

Price Drop
Redex
Redex Fuel System Cleaner Petrol Injector  1L 159 views today
£12.99 £11.49 save £1.50
Price Drop
Holts
Holts Cold Start 400ml 159 views today
4.9 / 5 (24)
  • Size : 400ml
£3.99
Price Drop
Wynn's
Wynns Diesel Particulate Filter Cleaner 325ml 159 views today
£10.49
Price Drop
Wynn's
Wynns Xtreme Diesel System Cleaner 325ml 159 views today
£7.00 £6.49 save 7%
Price Drop
Extralube
Extralube ZX1 Micro Oil Treatment 250ml 159 views today
£20.99
Price Drop
Wynn's
Wynns Formula Gold Petrol Treatment 500ml 159 views today
£16.00 £13.79 save £2.21
Price Drop
Wynn's
Wynns Catalytic Converter & Lambda Cleaner 159 views today
£9.79
Price Drop
Wynn's
Wynns Diesel EGR Valve Cleaner 150ml 159 views today
4.3 / 5 (139)
  • Size : 150ml
£10.00 £8.79 save £1.21
Price Drop
Redex
Redex Petrol Injector Cleaner 500ml 159 views today
4.6 / 5 (48)
  • Size : 500ml
£8.49 £7.49 save £1
Displaying   24   of   94   products

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.