Its strongly advised that the 3M Promoter Pen (part nr 3MPEN-BR-1) is used to increase the adhensive force of the seal to the frame

Castrol Classic 20W50 is a high-quality mineral multigrade engine oil developed specifically for classic and vintage engines. The oil provides excellent lubrication, stable oil pressure and strong wear protection, making it suitable for the Rolls-Royce and Bentley models.