Vital to your vehicles engine, 0w-40 engine oil is what ensures your vehicles internal components are lubricated correctly to prevent them from seizing. Engine Oil Viscosity refers to the oils resistance to flow. It is therefore important to ensure 0w-40 oil is the correct oil for your requirement. Using the wrong engine oil could cause engine wear as well as affect the engines performance as a whole. We stock a variety of 0w-40 in various different sizes from top up 0w-40 1 Litre Bottles to full oil change 5 Litre 0w-40 Bottles. At Aceparts.co.uk we stock a wide range of quality 0w-40 Engine Oils for all types of vehicles, so we're 99.9% sure we will have the engine oil you require. Be sure to order online with Aceparts for a hassle free, money saving experience.