RE:RE:RE:RE:Technical/stupid question.The article you referenced is not completely true when it says the US uses the Imperial measuring system. There is a difference between the US Cutomary gallon and the Imperial gallon. The United States gallon is 128 oz while the imperial gallon is 160 oz. It is a common error.
Also, while I am at it, in the metric system MCM would represent a million (M) cubic metres not a thousand (k). Someone was sloppy in their writing.