The Sage Oil/Vac is a powerful yet safe piece of equipment, which can be used to drain fluid from a container, put fluid back into a container and fill tires with air. The vacuum's most important feature is that it is mobile and easy to move. - The Sage Oil/Vac is a powerful yet safe piece of equipment, which can be used to drain fluid from a container, put fluid back into a container and fill tires with air. The vacuum's most important feature is that it is mobile and easy to move.