1.BEST CONDITION: Ring surface shiny & smooth/ Chamfer on top & bottom edges of rings present/ No carbon between piston rings/ All rings sealing.
2. GOOD CONDITION: Exhaust gas is sealed at # 2 ring.
3.ORDINARY CONDITION: Exhaust gas is sealed at # 3 ring.
4. WORSE CONDITION: Exhaust gas is sealed at # 4 ring.
5. PISTON RING SCUFFING: Scuffing can be seen at all piston rings/ Micro seizures can be seen on ring surface/ Edges of rings are shart due to wear.