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Concerned with the time, money, and resources that the federal government expends servicing its vehicle and engine fleet, the Senate Committee on Environment and Public Works asked GAO to compile information on the government's use of engine lubricating oil. GAO was asked to determine: (1) how much engine lubricating oil the federal government bought in fiscal years 1999, 2000, and 2001; (2) what costs are incurred for the disposal and recycling of engine lubricating oil; (3) what costs are incurred for changing motor oil in military and civilian fleets; (4) what logistical implications exist for the transport of engine lubricating oil during recent military operations; and (5) what options exist for reducing purchase, maintenance, and disposal costs for engine lubricating oil. To conduct its study, GAO focused on three agencies that account for 79 percent of all non-tactical vehicles owned or leased by the U.S. government: the U.S. Postal Service (USPS), the Department of Defense (DOD), and the General Services Administration (GSA). It compiled information only on engine lubricating oil used in ground vehicles and equipment and not in aircraft and ships.

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