Reply To: Rotella 10 or equivalent

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Rotella is a monograde, low detergent oil. Different grades were specified depending on ambient temperature, resulting in different oils being used in summer and winter. 10w30 is a multigrade oil that behaves like a 10 grade oil at low temperatures and a 30 grade oil at high temperatures

For use in the UK, SAE10 sounds low – I believe SAE20 was recommended for the Lister JP2 in the UK, although SAE30 was also sometimes used.

Any brand could be used – it doesn’t need to be Shell.