Wynns Stop Smoke Oil Treatment 325ml



Fitted bundle deal

includes Accessories + Fitting

Item: 176610

Wynns Stop Smoke Oil Treatment 325ml


(Unit price: £18.46 per litre)

How can I get it?

FREE Click & Collect

  • Description
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • Wynn's Stop Smoke Oil Treatment Product description

    The Wynn's Stop Smoke Oil Treatment is an oil soluble supplement, designed to reduce exhaust smoke due to oil burning. It is especially effective in older engines with worn components and can be used in petrol, LPG and diesel engines.

    features & benefits of Wynn's Stop Smoke Oil Treatment

    • Reduces exhaust smoke due to oil burning
    • Improves the viscosity properties of the oil at high oil temperatures
    • Seals the gaps between worn engine components
    • Improves compression and engine performance
    • Reduces engine noise
    • Ensures a strong protective oil film under high temperature conditions
    • Is compatible with all mineral, synthetic, single and multigrade oils
    • Will not harm catalytic converters
    • Suitable for petrol, LPG & diesel engines
    • Ideal for cars with excessive blue/grey exhaust smoke due to oil burning
    • Especially effective in older engines with worn components
  • Wynns Stop Smoke Oil Treatment 325ml is rated 4.2 out of 5 by 19.
    Rated 5 out of 5 by from Worked for leaky valve stem seals this product worked well for a petrol engine with valve stem seal leaking ie puff of blue smoke on startup and after idling for a while. Changed the oil and added this(heated the can up first as its very thick). No more blue smoke on startup or after iding. I suspect this product would also help for piston rings but not in the case of head gasket leaks or turbos seals, its not a miracle cure but very effective in my case.
    Date published: 2018-07-28
    Rated 1 out of 5 by from DOES NOT WORK Bought this wynns product as it is a trusted name and have used engine flush etc in the past with good results, No wonder this stop smoke engine oil treatmant was reduced it does not work at all, it has been circulating in the engine for 2 weeks and if anything smoke has got worse, don’t waste your money.
    Date published: 2018-02-14
    Rated 3 out of 5 by from Stop smoke Worked for a short while which was great but you cannot permanently fix a machanical problem with a liquid
    Date published: 2018-02-08
    Rated 5 out of 5 by from Very impressed Made a great difference to my oil combustion in my old BMW. Very impressed, love my old bemmer, so yes I highly recommend Wynns oil treatment.
    Date published: 2017-11-21
    Rated 5 out of 5 by from Good stuff But don't ask the world of it! I have used this in my transit connect 1.8tdci and it worked well. Was getting blue smoke on start up, indicative of leaking valve stem oil seals allowing oil to seep into the cylinders. This product has put a stop to that and has improved cold running too. I think people have been asking to much of this product reading some reviews. This stuff will mainly help with blue smoke which is oil being burnt in the cylinders due to leaking vale stem seals or worn piston rings. If you are getting lots of blue smoke especially when the engine is warm when accelerating and cruising then its probably to far gone for this product. Its also not going to be much use for black smoke or white smoke as these are fuel/air related problems. This stuff is also in a purple colored can now when you are looking for it on the shelf!
    Date published: 2017-08-21
    Rated 5 out of 5 by from It works but don't expect instant results My 09 plate zafira had developed a serious oil burning issue. After a oil and filter change the situation hasn't really improved, great clouds of oily smoke would appear form the exhaust under load. I tried this, first warming the bottle. It's taken almost a week and 50 miles or so to start working. There is still a small amount of smoke at a cold start but no more James Bind style smoke screens. Off course this product just thickens the vicousity of your oil and makes it more difficult to seep past stem seals and piston rings. It's a short term fix really, eventually a top end engine build may be required. However for the price it can't be beaten. Just a final point, - it's a good idea to run your engine or go for a drive after you've added this, it's so thick it may else just go into the sump and not get pumped around.
    Date published: 2017-03-10
    Rated 5 out of 5 by from It Works! 100k smokey, losing oil mini one - symptoms stopped after first use...
    Date published: 2016-06-05
    Rated 5 out of 5 by from Stopped smoke! I had white and blue smoke all the time,after using this and driving about 50 miles its all gone!! Just a touch of black diesel smoke on full throttle.
    Date published: 2016-05-21
    • y_2018, m_11, d_17, h_13
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_19
    • loc_, sid_176610, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_halfords
  • UK Delivery

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

    Please allow 3-5 working days for delivery. Your delivery date will be communicated at checkout.


    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
    Please allow 3-5 working days for collection. We'll text you to let you know when your item are ready to collect. We'll hold your item in store for seven days. 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.

    Showing 1 - X of our buying options
    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 Stop Smoke Oil Treatment 325ml

£6 Wynns Stop Smoke Oil Treatment an oil soluble supplement, reduces exhaust smoke due to oil burning.