The best reason for having two different cans/risbridgers is so that at stupid o' Fuc)(ing clock after not being able to sleep on nightshift you don't fill the steely warbird with the wrong fluid and it tentpegs into a mosque/hospital/school/town centre on the way to target with a major system failure.............
40p a can!!!!! only in this day and age.........
all it will take is for one accident and we can write off all of those 40p savings and much much more.
Will the class one !!!!!! who thought up this brainwave please stand up and be counted. Bet he won't have to put his pension/liberty on the line that no-one ever makes a mistake with the can........