OIL ANALYSIS OF AN ENGINE OIL – WEAR METALS
The presence of metals in the oil is an important indicator of the state of wear of the engine.
The most common metals that we can find inside an engine are the following:
| Aluminium (Al) | Cupper (Cu) | Chrome (Cr) | Tin (Sn) | Iron (Fe) | Lead (Pb) | |
|---|---|---|---|---|---|---|
| Rings | X | X | ||||
| Camshaft | X | |||||
| Connecting rod | X | |||||
| Oil Pump | X | X | ||||
| Hub bushing | X | X | X | |||
| Connecting rod bushing | X | X | X | |||
| Pump oil bushing | X | |||||
| Piston housing | X | X | ||||
| Case | X | X | ||||
| Crankshaft | X | |||||
| Bearings | X | X | X | X | ||
| Anti-friction bearings | X | X | ||||
| Oil cooler | X | |||||
| Chain gears | X | |||||
| Fuel | X | |||||
| Valve guides | X | X | ||||
| Pistons | X | X | ||||
| Coolant | X | |||||
| Valve train | X | |||||
| Turbo | X | X | ||||
| Scape valve | X | X | ||||
| Thrust washer | X | X | X | X |
