Fuel & Oil Additives

  1. ENGINE FLUSH - 450ML DRIVETEC engine flush - 450ml Part No :981AA2420
    £2.99
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  2. DIESEL TREATMENT - 300ML CARLUBE diesel treatment - 300ml Part No :982AA0760
    £4.99
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  3. DIESEL TREATMENT 300ML TETROSYL diesel treatment 300ml Part No :TETQPD300
    £4.99
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  4. POWERTEC THROTTLE BODY CLEANER POWATEC powertec throttle body cleaner Part No :PWT2801
    £6.24
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  5. POWERTEC RADIATOR FLUSH POWATEC powertec radiator flush Part No :PWT1501
    £6.76
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  6. POWERTEC RADIATOR STOP LEAK POWATEC powertec radiator stop leak Part No :PWT1601
    £6.76
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  7. REDEX DIESEL CLEANER - 250ML GSF redex diesel cleaner - 250ml Part No :982AA0870
    £6.97
    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  8. PETROL INJECTOR CLEANER - 300ML CARLUBE petrol injector cleaner - 300ml Part No :982AA0780
    £7.00
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  9. PETROL TREATMENT - 300ML CARLUBE petrol treatment - 300ml Part No :982AA0790
    £7.00
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  10. CARBURETTOR CLEANER COMMA carburettor cleaner Part No :981NA0060
    £7.18
    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  11. REDEX LEAD SUBSTITUTE - 250ML HOLTS redex lead substitute - 250ml Part No :HOLRADD1301A
    £7.39
    • In Stock

    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

  12. REDEX PETROL CLEANER - 250ML GSF redex petrol cleaner - 250ml Part No :982AA0860
    £7.39
    • FREE UK Delivery: On orders over £25

    • Click & Collect: Branches nationwide

Discover effective car additives at competitive prices here at GSF Car Parts, the automotive car experts. We have an impressive range of additives that will give your vehicle a quick and easy boost, and generally help to keep it in top condition. You’ll find vehicle additives that will fulfil all sorts of functions, from cleaning and flushing the internal systems, to helping improve fuel efficiency and performance. Browse the range to find the ideal additive for your car. 

Additives provide a quick and relatively affordable way to treat, condition, and generally improve your car’s overall function and performance. They’re usually simple to use — many of the products you see here just need to be added to your fuel tank and left to do their work. So, if you want to give your car a quick performance boost without breaking the bank, look no further than this range of additives and treatments.

If your priority is removing build-up and contaminants from your car’s fuel system and injectors, then our fuel additives, which include DPF, diesel, and petrol fuel system cleaners, will be perfect for you. Our extensive range also includes engine oil flushes and coolant system cleaners that will clean and condition these important systems. Worried your car has a leak? Try our leak location fluid and radiator sealing compounds.

Quality is everything when it comes to additives, and we offer a selection of products from some of the best brands in the business — like Wynn’s, Redex, and Carlube — at unbeatably low prices. So, you can be sure that any of these additives will do exactly what it says on the tin. If you’re impressed by what you see here, then you might also want to shop our full range of lubricants and fluids.

Buy automotive additives from our online store today, and you'll receive free UK delivery when you spend £25. If you prefer, you can also use our convenient Click and Collect service, which enables you to pick up your parts from a GSF Car Parts branch in under an hour's time. Buy now.