Oil Additives - Wynns

We stock a range of oil additives from many leading brands. These are generally used to clean out a engine before an oil change. This range of engine additives and treatments from Wynns is available direct from this website, or in store too.
      Click on the column headings to sort by name or price.


Product Image Item Name- Descending Price
Wynns Dual Action Engine Stop Leak - Petrol / Diesel - 325ml

Wynns Dual Action Engine Stop Leak - Petrol / Diesel - 325ml

A special blend of chemicals formulated to stop engine oil leaks and drips, and to reduce oil burning in worn engines.

£6.49
Wynns Engine Flush - For Petrol and Diesel Engines - 444ml

Wynns Engine Flush - For Petrol and Diesel Engines - 444ml

Stops contamination of new engine oil. Wynn's Engine Flush quickly and efficiently dissolves varnish and removes sludge and other contaminations from...

£4.99
Wynns Engine Flush for Diesels - For Diesel Engines - 425ml

Wynns Engine Flush for Diesels - For Diesel Engines - 425ml

Specifically designed for diesel engines, Wynn's Engine Flush for Diesels rapidly dissolves sludge, varnish and other contaminants from the...

£6.49
Wynns Engine Stop Leak - For Petrol and Diesel Engines - 325ml

Wynns Engine Stop Leak - For Petrol and Diesel Engines - 325ml

Stops engine oil leaks and drips that can result from the drying out and shrinking of engine neoprene, rubber seals and O-rings.

£6.49
Wynns High Performance Engine Treatment - 500ml

Wynns High Performance Engine Treatment - 500ml

Wynns High Performance Engine Treatment is a chemical treatment completely soluble in oil. Double action: Increasing compression and reducing wear....

£9.99
Wynns Hydraulic Valve Lifter Treatment - Petrol / Diesel - 325ml

Wynns Hydraulic Valve Lifter Treatment - Petrol / Diesel - 325ml

Developed to clean away internal engine deposits that create top-end noise and reduce efficiency. Wynn's Hydraulic Valve Lifter Treatment is 100% oil...

£7.99
Wynns Stop Smoke - For Petrol and Diesel Engines - 325ml

Wynns Stop Smoke - For Petrol and Diesel Engines - 325ml

Reduces exhaust smoke from burning oil, and increase compression and performance. Wynn's Stop Smoke will restore lost power and maintain cleanliness...

£4.99
Wynns Super Charge Oil Treatment - Petrol / Diesel - 300ml

Wynns Super Charge Oil Treatment - Petrol / Diesel - 300ml

Designed to reinforce engine oil during high stress operation and ideal for old or tired engines to help them perform to their maximum. Especially...

£4.49
Wynns Super Charge Oil Treatment - Petrol / Diesel - 425ml

Wynns Super Charge Oil Treatment - Petrol / Diesel - 425ml

Designed to reinforce engine oil during high stress operation and ideal for old or tired engines to help them perform to their maximum. Especially...

£5.69
Wynns Super Charge Oil Treatment for Diesel Engines - 300ml

Wynns Super Charge Oil Treatment for Diesel Engines - 300ml

The ideal preventative treatment for diesel engines. Specifically developed for modern diesel engines, it reduces cylinder bore polishing, protects...

£6.49