Originally Posted By: artificialist
My dad told me that during the 70s, M1 oil was $5/quart, so he bought 1 quart and used it in his Honda motorcycle, since the experiment wouldn't be too expensive.
Interesting that even the fanciest M1 oil is not more than $8/quart despite all the inflation.
It was $5.95/quart since it was initially only available retail through the Mobil gas station distribution and limited in supply. As the supply increased, it still got distributed only through the gas stations, but they sold "cash and carry" quarts for $4.95. I think the price pretty much stayed flat for an eternity.