Wynns Engine Flush Petrol and Diesel 425ml



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includes Accessories + Fitting

Item: 184374

Wynns Engine Flush Petrol and Diesel 425ml


(Unit price: £11.76 per litre)
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Was £5.50 *

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  • Description
  • Reviews
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  • Wynn's Engine Flush Petrol and Diesel 425ml

    Use the Wynn's Engine Flush Petrol and Diesel 425ml prior to an oil change and it will get rid of the build up of sludge and other contaminates from vital engine parts with ease. For use with all Petrol and Diesel engines of vehicles and stationary equipment.

    Wynn's Engine Flush Petrol and Diesel 425ml Extra Info:

    • Provides extra protection during the treatment.
    • Recommended for all petrol and diesel engines.
    • Prevents contamination of fresh oil by residues left behind.
    • Quietens noisy hydraulic valve lifters by removing deposits.
    • Compatible with all mineral, synthetic, single and multigrade oils.
    • Frees sticking internal engine components by dissolving deposits.
    • Cleans engines, hydraulic systems, gearboxes and differentials internally.
  • Wynns Engine Flush Petrol and Diesel 425ml is rated 4.6 out of 5 by 30.
    Rated 4 out of 5 by from Very Good Product Used this product in my 1989 Mini Flame, just follow the instructions on the back if you have limited mechanical knowledge. I was suprised to see how much sludge came out of my sump and i change my oil every 4 months and have never seen the same amount of rubbish flow out, so i can only imagine that the product has done its job
    Date published: 2011-04-23
    Rated 4 out of 5 by from Good for my Body and Vehicle Repair Workshop I still use Slik50 products but they seem to be loosing their vigour! Used Wynne's products for a few years and swear by them!!
    Date published: 2017-05-02
    Rated 5 out of 5 by from Brilliant stuff. I have used this flush on my Volvo xc90 d5 car 3 time's now and every time it really really clean's the inside of the engine brilliantly before an oil change. A lot of people are scared to use a engine flush especially on a old or high mileage engine but i have not had any problem's using this and i will continue to use it.
    Date published: 2015-11-20
    Rated 5 out of 5 by from very good made difference after few weeks service engine oil still clear it got rid all old oil from engine
    Date published: 2015-10-05
    Rated 5 out of 5 by from Good product Have used this twice on my 1.4 tsi twincharger, does a great job of removing deposits around the engine - i only had to look into the oil filter hole after letting it drain for 30 minutes, to see how clean things were. Unlike some other engine flushes this one doesn't contain solvents, but only detergents and anti-wear compounds. This makes it one of the safer engine flushes on the market. The flush was used to solve a common problem with my engine and the tiny passage ways on the camshaft adjuster gumming up and sometimes resulting in the adjuster sticking for a moment on startup.
    Date published: 2015-08-01
    Rated 5 out of 5 by from does what it says Put in before an oil change. Did its job well. engine sounds better and smother
    Date published: 2015-03-08
    Rated 5 out of 5 by from Was dubious,- But results outstanding! I've never used this product before, but, as a vehicle in our fleet has been overseas, and travelled 30'000 miles without a service, I knew the oil would be bad. I followed the instructions, dropped the oil, which was possibly thinner due to adding this product, then changed the filter (Which was in a bad way). I dropped a few extra litres of new oil through the engine to get rid of residue, replaced the oil drain plug, and topped up. The car ran like a dream, and there was definitely a difference in performance. Additionally to this, both air and fuel filters where changed, which also would impact on the performance of the vehicle, however, I am most pleased with this product, and will use it more often!
    Date published: 2015-01-04
    Rated 5 out of 5 by from excellent Bought this item to help clean engine out, not only has it done this it's also improved performance and diesel usage, i recommend this item to anyone doing a service on there car
    Date published: 2014-11-02
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  • UK Delivery

    £3.99 NEXT DAY Delivery available on orders under £40 placed by 8pm*

    Your delivery date will be communicated at checkout. Delivery times are Monday to Saturday.


    UK Delivery

    Free NEXT DAY Delivery available on orders over 40 placed by 8pm*

    Your delivery date will be communicated at checkout and on your confirmation email.

    Delivery times are Monday to Saturday. Next Day delivery not available on all products; including Built Bikes, Bulky items and Web Exclusive products. Bike delivery will take three days, and an extra day if you'd like us to build it for you.

    *Click here to learn more.


    UK Delivery

    FREE Click & Collect - you can reserve an item online and pick it up from a store of your choice

    Simply enter your Postcode on the product page to check availability, and select Click & Collect at checkout. What's more, you pay for your items on collection. Click here to learn more.

    Items in stock - collect from 1 hour
    If your item is in stock at your chosen store, you can collect it from one hour after ordering online. We'll hold your item in-store for seven days.

    Items not in stock - collect next day*
    If your item isn't in stock, we can order it to your chosen store for collection.
    *If you place your order before 8pm you can collect it from 4pm the following day (except Sundays), and we'll hold your item in-store for seven days.

    Built Bikes
    Collection time will increase by 24 hours if you'd like us to build your bike for you.

    Please note that items sent directly from the supplier need to be ordered by 3pm for collection two days later. All delivery times will be shown during checkout.


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on halfords.com.

    Checkout is always via halfords.com and all payment will be taken via halfords.com. In checkout the products will be split into separate deliveries for each supplier.

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    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Wynns Fuel & Oil Additives

Wynns Engine Flush Petrol and Diesel 425ml

£5 Wynn's Engine Flush is designed to clean all oil lubricating systems prior to your oil change.