Patent ID: 7467689

Claim:
A method for removing lubricant from an engine, comprising the steps of: providing a drain conduit connected in fluid communication with a lubricant reservoir of said engine, a submerged end of said drain conduit being disposed in a bottom portion of said lubricant reservoir; manually increasing the pressure of said lubricant reservoir, said pressure increasing step comprising the step of introducing a gas into said lubricant reservoir through an inlet valve to induce said lubricant to flow into said submerged end of said drain conduit and through the length of said drain conduit; providing said inlet valve with first and second alternative fluid paths connected to said lubricant reservoir; providing said inlet valve with a movable valve member movable between a first position connecting said first fluid path to said lubricant reservoir, and a second position connecting said second fluid path to said lubricant reservoir; moving said movable valve member between said first and second positions; performing said step of increasing the pressure of said lubricant reservoir by moving said movable valve member to said first position; providing said movable valve member as a rotatable valve member; providing said rotatable valve member with first and second channel passages; rotating said rotatable valve member to said first position to align said first channel passage and said first fluid path to pass fluid therebetween; and rotating said rotatable valve member to said second position to align said second channel passage and said second fluid path to pass fluid therebetween; and conducting said lubricant from said lubricant reservoir, wherein: said drain conduit is insertable into a tube extending from an internal cavity of said lubricant reservoir and said tube is sealable to prevent said gas from passing between an outer surface of said drain conduit and an inner surface of said tube.