1 x 5 Litre - Millers Oils CRO 10W40 Motorsport Running In Engine Oil

    CRO 10W40 is a motorsport oil designed to specifically to aid the running in process of rebuilt engines by providing full protection of highly stressed components whilst allowing optimum bedding in process for piston rings to the cylinder bore. It is not recommended that synthetic or semi synthetic oils are used for bedding in as they can be too slippery. This is a blend of high quality solvent refined mineral oils.

    Suitable for test bed running up to 5 hours or for 500 miles on the road CRO 10W40 also allows for short burst runs at full engine load.

    It is recommended that once the running in process is complete, the oil system is flushed and the oil replaced with the correct grade specified for the engine.

    Available in 1 or 5 Litre size

     

    09.08.2026, 10:09:35

    We are putting the 'customer' back into 'Customer Service'. Our shop is designed to be fast, clear and easy to use. We strive to include all the information you require to make your purchase as simple and hassle free as possible. However, we want you to be confident that if you have any questions or queries regarding any of our listings, our dedicated team of experts are at the other end of a telephone or keyboard waiting to help. We understand our customers' requirements for fast, reliable service so thanks to our huge range of available stock and rapid delivery service, we can ensure your order arrives with you promptly; when you want it, where you want it... anywhere in the world!

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    Goods deemed unsuitable or not required may be returned via eBay for a refund if they are returned to us within a 30 day period from date of original order, subject to the following and depending on reason.

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