Piston Ring Oil Consumption

Worst of all your oil level will continue to decrease making it necessary to constantly top off oil.

Piston ring oil consumption. The consolidated class action lawsuit. 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. The following is a checklist to be used in assisting you to determine the reason for excessive oil consumption.

The piston rings are there to prevent oil from entering the combustion. Oil mobility and consumption through engine valves. Oil consumption primarily occurs near or through the combustion chamber either downward through valves or upward past the piston ring pack. Check for oversize cylinders and use of standard ring set.

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. Oil consumption is a known issue but why it occurs and how to avoid it are things that are fully understood until today. This list is to be used when the engine is disassembled and pistons and rings are available for inspection. Incorrect set for job.

General motors vortec engines allegedly have piston ring problems that cause oil consumption. 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. 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. Improving heat transfer from the piston to the cylinder wall.

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. Oil washing is an indication of engine oil passing through the piston rings see photo 1. Oil collecting on the stems of intake valves is sucked into the combustion chamber during normal operation.