Sawyer Petroleum's Oil Bank Systems uses nitrogen pressure to move product instead of the more traditional pump systems. Nitrogen pressure moves new oil from the white Oil Bank container, and vacuum pulls used oil into the gray Oil Bank container. Bulk oil is stored in large Oil Bank containers usually above ground. When the portable unit is empty it can be automatically re-filled from the primary system using pressure and vacuum. Sawyer Petroleum will also refill and service the Oil Bank system according to your needs. Oil Bank containers are available in 22 to 1000 gallons. Sawyer Petroleum has found cost-effective uses for the Oil Bank system. Some uses include, Off-road heavy equipment, agriculture, automotive, marine, and truck fleet service. The highly mobile design make's the Oil Bank system well suited for centralized vehicle and remote on-site maintenance. Sawyer Petroleum's Oil Bank Systems offers a major advantage in simplified maintenance, reduced handling cost, and greater control over inventory and waste management.