Worst of all your oil level will continue to decrease making it necessary to constantly top off oil.
Piston ring oil consumption.
The class action alleges defective piston rings are prone to premature wear and excessive engine oil consumption that causes damage to the ecotec engines.
General motors vortec engines allegedly have piston ring problems that cause 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.
Maintaining the proper quantity of the oil between.
September 19 2020 a gm piston ring lawsuit failed class action certification and was mostly.
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.
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.
The consolidated class action lawsuit.
Incorrect set for job.
Improving heat transfer from the piston to the cylinder wall.
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.
The following is a checklist to be used in assisting you to determine the reason for excessive oil consumption.
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 washing is an indication of engine oil passing through the piston rings see photo 1.
The main functions of piston rings in engines are.
Oil mobility and consumption through engine valves.
This list is to be used when the engine is disassembled and pistons and rings are available for inspection.
Sealing the combustion chamber so that there is minimal loss of gases to the crank case.