Engine Oil Pressure Gauge
A sudden decrease or absence of oil pressure may indicate mechanical failure. Bring the vehicle to a safe stop and investigate the cause to prevent further damage. Do not operate the engine until the cause has been determined and corrected.
The engine oil pressure gauge displays the current engine oil pressure. If engine oil pressure falls below the minimum levels shown in Table., the CHECK engine lamp will illuminate. If the condition does not improve, the STOP engine lamp will also illuminate and an audible warning will sound. The engine will then derate or shut down, depending on the type of engine protection system installed.
Table 1, Minimum Engine Oil Pressure
|
Minimum Oil Pressure1 |
||
|
Engine Model |
At Idle Speed: psi (kPa) |
At Rated RPM: psi (kPa) |
|
Caterpillar |
10–20 (69–138) |
30–45 (207–310) |
|
Cummins |
15 (103) |
35 (241) |
|
Detroit |
14 (97) |
55 (350) |
|
Mercedes-Benz |
7 (50) |
36 (250) |
- Pressures apply with the engine at operating temperature. Oil pressure may be higher on a cold engine. Observe and record pressures when the engine is new to create a guide for checking engine condition.