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Home / Oil Additives

Oil Additives

Showing all 17 resultsSorted by price: high to low

  • Sale! Wynn's Professional Oil System Cleaner Engine Flush (Multi-Buy X4)

    Wynn’s Professional Oil System Cleaner Engine Flush (Multi-Buy X4)

    £55.99 Original price was: £55.99.£29.99Current price is: £29.99.
  • Wynn's Commercial Vehicle Super Charge Oil Treatment 1000ml

    Wynn’s Commercial Vehicle Super Charge Oil Treatment 1000ml

    £21.99
  • SLICK50 Engine Treatment 750ml

    SLICK50 Engine Treatment 750ml

    £19.99
  • Wynn's Commercial Vehicle Oil System Flush 1000ml

    Wynn’s Commercial Vehicle Oil System Flush 1000ml

    £16.99
  • Wynn's Engine Stop Leak 325ml (Twin Pack)

    Wynn’s Engine Stop Leak 325ml (Twin Pack)

    £16.98
  • Wynn's Stop Smoke 325ml (Twin Pack)

    Wynn’s Stop Smoke 325ml (Twin Pack)

    £16.98
  • Sale! Wynn's Total Action Diesel Cleaner Kit

    Wynn’s Total Action Diesel Cleaner Kit

    £19.98 Original price was: £19.98.£15.98Current price is: £15.98.
  • Sale! Wynn's Total Action Petrol Cleaner Kit

    Wynn’s Total Action Petrol Cleaner Kit

    £19.98 Original price was: £19.98.£15.98Current price is: £15.98.
  • SLICK50 Engine Treatment 500ml

    SLICK50 Engine Treatment 500ml

    £14.99
  • Wynn’s Automatic Transmission & Power Steering Stop Leak & Conditioner 325ml

    Wynn’s Automatic Transmission & Power Steering Stop Leak & Conditioner 325ml

    £14.99
  • Wynn’s Hydraulic Valve Lifter Treatment 325ml

    Wynn’s Hydraulic Valve Lifter Treatment 325ml

    £10.99
  • Wynn’s Engine Stop Leak 325ml

    Wynn’s Engine Stop Leak 325ml

    £8.99
  • Wynn’s Super Charge 425ml

    Wynn’s Super Charge 425ml

    £8.99
  • Wynn’s Start-Stop Engine Protector 325ml

    Wynn’s Start-Stop Engine Protector 325ml

    £7.99
  • Wynn’s Super Charge 330ml

    Wynn’s Super Charge 330ml

    £7.99
  • Wynn’s Stop Smoke 325ml

    Wynn’s Stop Smoke 325ml

    £7.99
  • Wynn’s Engine Flush 425ml

    Wynn’s Engine Flush 425ml

    £6.99
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Wynn's Official Stockist

Wynn's Fuel Biocide Treatment
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Apr 20 2025

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Wynn's Fuel Biocide Treatment
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Aug 22 2024

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DPF
Mar 13 2024

The importance of keeping your diesel fuel tank more than 25% full for DPF efficiency

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American Classic Car
Feb 10 2024

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Leaping Cat Bonnet Mascot
Feb 10 2024

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Rain-X Wheel Protection
Feb 10 2024

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Important Information.

It’s important to select the appropriate engine additive treatment for the type of vehicle and the specific issue you’re trying to address.

Always follow the manufacturer’s recommendations and guidelines for using engine additive treatment, and consider seeking professional advice when in doubt. Contact Skinny Tree Limited for further help.

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