https://financialpost.com/technology/how-canada-convinced-the-world-to-eat-engine-lubricant
The history of canola seed in Canada
The need for Canadian rapeseed production arose from the critical shortage of rapeseed oil that was needed by Allied forces during World War II and were supplied by Canada to break the blockade of European and Asian sources in the early 1940s. The oil was urgently needed as a lubricant for the rapidly increasing number of marine engines in naval and merchant ships.
https://www.canolacouncil.org/canola-encyclopedia/history-of-canola-seed-development/