Checking the Oil Pressure

Checking the Oil Pressure - Gen 5 DD15 - Ops - #6728

Monitor the oil pressure as follows:

  1. Observe the oil pressure gauge immediately after starting the engine. An oil pressure gauge that registers 50 psi (3.4 bar) is a good indicator that all moving parts are getting lubrication. The engine oil pressure operating ranges for Detroit™ Gen 5 Heavy Duty engines are listed in the table below.
  2. If low oil pressure is indicated contact an authorized Detroit™ service outlet for further instructions.

Table 1, Oil Pressure Operating Ranges

psi (bar)

Pressure

50 psi (3.4 bar)

Normal Oil Pressure

25 psi (1.7 bar)

Low Oil Pressure

0 psi (0 bar)

Very Low Oil Pressure

    Table 1, Oil Pressure Operating Ranges

    Note:
    Document Number: 0000009724
    Manual Publication Date: 2025-08-26
    Topic Publication Date: 2026-02-05