Imperial Oil Oil discovered the Leduc Woodbend Devonian oil reef in 1947, marking the beginning of the contemporary period in Canadian oil and gas development. Drilling began on the landmark discovery well Leduc No. 1 on November 20, 1946. In 1989, Imperial Oil acquired Texaco's Canadian operations. From the 1934-35 season through the 1975-76 season, Imperial Oil was a sponsor of the Canadian Broadcasting Corp. program "Hockey Night in Canada" for both radio and television broadcasts. In February 2013, Richard Kruger, President of ExxonMobil Production Co. and a Vice President of Exxon Mobil Corp., was appointed to be Chief Executive of Imperial
Motor oil that flows better, allowing fresh oil in its place sooner. Cold weather has a thickening effect on conventional oil, and this is one reason lighter weight oils are manufacturer recommended in places with cold winters. Motor oil changes are usually scheduled based on the time in service or the distance that the vehicle has traveled. These are rough indications of the real factors that control when an oil change is appropriate, which include how long the oil has been run at elevated temperatures, how many heating cycles the engine has been through, and how hard the engine has worked. The