Energol
1948 Anglo-Iranian started marketing Energol lubricating oil in various parts of Europe, followed by the UK the next year.
1951 Prices Patent Candle Co developed the first multigrade oil, Energol, at its Battersea works - see Price's Lubricants
1954 Increasing demand for multigrade oil led BP, part owners of Price's, to remove all the lubricating oil business to their oil refinery at Grangemouth and rebrand it as their own product.