Indian oil companies like Indian Oil, Bharat Petroleum, and HPCL have implemented various loyalty programs to build customer relationships. Indian Oil offers a Citibank card, Convenio shopping stores, and games like Check and Win. Bharat Petroleum focuses on fuel quality assurance and provides stores, credit cards, and customer engagement initiatives. HPCL operates a loyalty program called Club HP, offers a Payback program, and has partnerships with companies like Airtel, Fedex, and ICICI to provide additional customer benefits and services.