Subscribers include ExxonMobil, Argus Media, Kline & Company, ConocoPhillips, Luberef, Shell Far East, Shell International Trading & Shipping, Flint Hills Resources, Nynas, Motiva Enterprises, Sunoco, ENOC, ELCO, Petronas, GS Caltex, Behran Oil, Sepahan, Trafigura, TotalFinaElf, Castrol, Indian Oil Corporation, Hindustan Petroleum, Bharat Petroleum, MRPL, Bharat Shell, Feedco Resources, Qatar Lubricants, Chemlube, Caltex, Columbia Petrochem, Apar Industries, Gulf Oil, Tide Water, Valvoline, Houghton Hardcastle, Lubrizol, Raj Petroleum, Panama Petrochem, Meguin, Karol Lubricants, Bajaj Auto, Kirloskar Oil Engines, and many more prominent companies.