Engine - Lubrication

Engine Oil

What is the correct engine oil for my Rolls-Royce 20/25?

“What is the correct engine oil for my Rolls-Royce 20/25?” and “how much should I add?” are two questions asked many times, in a number of places. It is a fundamental aspect of vehicle maintenance and one which owners are keen get “right”, to ensure the health and reliable running of their car’s engine. This is an in depth article about the engine oil system. RREC 20-25 Register, © by Andrew Feaver, 2025.