Millers Motorsport oils are available as either semi synthetic or full synthetic to enable the competitor to select the ideal lubricant for their purpose.
CSS 20w60
This high performance semi synthetic oil formulated at the top end of the SAE50 viscosity range to give maximum protection in fast road, race or rally cars. Ideal for sports cars where a 20w50 was originally recommended.
CSS 10w40
A high performance semi-synthetic for more modern multi cam & valve engines where a 10w40 is specified. Ideal for use in MGF/TF & Mazda MX-5s.