When I order my Royal Purple Engine
oil from the states I can only get it in quart bottles... I've got bloody hundreds of them now. They ship in 44s and then decanter in those silly little quart bottles...
I only get 1 Quart = 0.94635294599999 Litre so perhaps they rate sump capacity different to the actual liquid conversion?
I wish I got over a litre a quart. The stuff I buy is bloody expensive!