Dubious   I added the dubious tag as it seems somewhat untrue from what I understand Global strategic petroleum reserves isnt clear in some cases but it seems to me to imply most of the stores are petroleum ie crude oil not petroleum products ie petrol diesel etc In Japan the government reserves are petroleum not petroleum products there are some privately held petroleum products as a reserve but most of the reserve is petroleum And the US Strategic Petroleum Reserve which is after all about  of the reserves is mostly crude oil according to that article