2x Wynns Stop Smoke Oil Additive Petrol & Diesel Engines Reduce Exhaust Smoke 325ml
14-day returns on all eligible orders
Contact us within 14 days of receiving your order to request a return.
Shipping information
Orders are picked, packed and dispatched from our Northampton warehouse.
- Free delivery to mainland UK addresses on orders of £40 or more.
- Orders under £40, and orders to Northern Ireland, have a delivery charge, shown at checkout before you pay.
- You will get an email with your tracking number once your order has shipped.
Full details are in our Shipping Policy.
Returns & warranty
Changed your mind? You can return an online order within 14 days of receiving it. Please contact us first for return instructions, then you have 14 days to send the goods back.
- Items must be unused, complete and in their original condition, with all accessories, instructions and original packaging.
- You arrange and pay for the return postage on change-of-mind returns. We refund the price of the item plus our standard delivery charge.
- Damaged in transit? Let us know within 48 hours of delivery - photos help.
- Faulty or wrong item? Contact us before sending anything back. Faulty goods are covered by your statutory rights.
Your statutory rights are not affected. Full details are in our Refund Policy, or email onlinesales@nn4online.co.uk.
Wynn's Stop Smoke For Oil 325ml
Wynn's Stop Smoke For Oil 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. Simply add contents to engine oil when the engine is warm.
Technical information:
- 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
- Suitable for petrol, LPG & diesel engines
325ml bottle treats 3 - 5L