Piston Ring Oil Consumption

Oil consumption is a known issue but why it occurs and how to avoid it are things that are fully understood until today.

Piston ring oil consumption.

The consolidated class action lawsuit. On the other hand most oil consumption is through the pistons and piston rings which is where our story goes next. To better understand ring related oil consumption let s look at piston and piston ring design. This list is to be used when the engine is disassembled and pistons and rings are available for inspection.

A piston ring is a metallic split ring that is attached to the outer diameter of a piston in an internal combustion engine or steam engine. Worst of all your oil level will continue to decrease making it necessary to constantly top off oil. General motors vortec engines allegedly have piston ring problems that cause oil consumption. The piston rings are there to prevent oil from entering the combustion.

Oil collecting on the stems of intake valves is sucked into the combustion chamber during normal operation. If you have worn out or damaged piston rings oil will be able to seep through them and then enter the internal combustion chamber this will cause the oil to burn while carbon deposits form on the piston rings and cylinders. Maintaining the proper quantity of the oil between. The main functions of piston rings in engines are.

Check for oversize cylinders and use of standard ring set. The piston ring liner system is a major source of lubricating oil consumption design approaches to minimize cylinder bore distortion and lube oil consumption include increased piston ring conformability specialized liner surface finish piston ring stability piston design and minimizing lubricant evaporation. Oil consumption primarily occurs near or through the combustion chamber either downward through valves or upward past the piston ring pack. Incorrect set for job.

The class action alleges defective piston rings are prone to premature wear and excessive engine oil consumption that causes damage to the ecotec engines. September 19 2020 a gm piston ring lawsuit failed class action certification and was mostly. Sealing the combustion chamber so that there is minimal loss of gases to the crank case. Oil washing is an indication of engine oil passing through the piston rings see photo 1.