US 5,062,398 A · Apparatus and method for changing oil in an internal combustion engine with optional flushing

Abstract

A first pump can withdraw waste fluid from an oil pan reservoir and optionally, can be used to introduce flushing fluid through the oil filter and internal oil lubrication distribution passage system, to recirculate the flushing fluid within the internal oil lubrication distribution passage system, to withdraw the waste flushing fluid from the oil pan reservoir for disposal and storage in an external storage receptacle. An air purge connection is provided for evacuating fluid retained within the oil filter element and any fluid remaining in the internal oil lubrication distribution passage system into the oil pan reservoir prior to withdrawal of the fluid by the first pump. A second pump is provided for supplying fresh motor oil from an external storage receptacle through the oil filter and the internal oil lubrication distribution passage system. Optionally, a remote oil filter and drain mounting bracket provides a central, easily accessible location within the engine compartment for connection to the oil changing apparatus and for changing the oil filter element. A drain plug adapter is connectible to the oil pan reservoir to provide connection to the first pump. Methods for removing waste or spent fluid and introducing fresh fluid through the oil filter element and internal oil lubrication distribution passage system, and for introducing, recirculating and removing flushing fluid from the internal oil lubrication distribution passage system are also disclosed.

Claims20

Dependent claims

An apparatus for changing oil in an internal combustion engine having an internal oil lubrication distribution passage system with an oil filter and an oil reservoir, the apparatus comprising:

means for evacuating fluid from said oil filter into said oil reservoir;
means for removing fluid from said oil reservoir;
and
means for introducing fluid into said oil reservoir through said oil filter and internal oil lubrication distribution passage system.

1 more element

An apparatus for changing oil in an internal combustion engine having an internal oil lubrication distribution passage system with an oil pump, an oil filter and an oil reservoir, the apparatus comprising:

fluid supply passage means having a disengagable fluid connection with said internal oil lubrication distribution passage system at a point between said oil pump and said oil filter;
fluid withdrawal passage means having a disengagable fluid connection in fluid communication with a lowermost portion of said oil reservoir of said internal combustion engine;
first fluid supply passage means connectible with an external storage receptacle;
first fluid discharge passage means connectible with an external spent fluid storage receptacle;
pump means having inlet passage means and outlet passage means;
first valve means for selectively connecting said inlet passage means with said fluid withdrawal passage means and with said first fluid supply passage means;
second valve means for selectively connecting said outlet passage means with said fluid supply passage means to said internal combustion engine and with said first fluid discharge passage means.

4 more elements

A method for changing oil in an internal combustion engine having an internal oil lubrication distribution passage system with an oil filter and an oil reservoir, the method comprising the steps of:

connecting an external, separable apparatus to said internal oil lubrication distribution passage system at a first point upstream of said oil filter, and at a second point in fluid communication with said oil reservoir;
evacuating fluid from said oil filter into said oil reservoir;
removing fluid from said oil reservoir;
introducing fluid into said oil reservoir through said oil filter and internal oil lubrication distribution passage system.

1 more element

Dependencies are inferred from the claim text.

Apparatus and method for changing oil in an internal combustion engine with optional flushing

Life of this patent

Apparatus and method for changing oil in an internal combustion engine with optional flushing

Life of this patent

Abstract

Claims20