Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Bog standard, a slang I picked up from my English motorcycling friends, refers simply to ordinary pump gas, or may refer to the very common, dirt cheap 15W40 motor oil often sold in bulk for Diesel engines. The Brits I knew were all about saving a penny when they could.  If I had to guess, the reference might be from back in the day, when cheap coal, only a step up from peat might have been so named. It would be synonymous with “garden variety”.