1 hogshead = 238.480943 liters
A rod is a unit of length, equal to 11 cubits, 5.0292 metres or 16.5 feet
So, that translates into 504 U.S. gallons per mile, or about 1.2 litres per metrer In units more normal for this purpose, it is 0.00198 miles per US gallon (or about 10.48 feet per gallon) or 118,500 L/100 km. I doubt that is how you like it.