Detroit Diesel — Oil Consumption
Testing & diagnosis · engine
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Verify the engine is equipped with the proper dipstick.
Procedure
- Visually inspect for external leaks and correct.
- Check for air cleaner restriction, air induction system leaks and excessive crankcase pressure.
- Change the oil using the recommended API Specification and viscosity for the ambient temperature.
- Determine initial oil consumption rate and trend at 1000 miles/50 hours or 5000 miles/250 hours.
- Record the amount of make up lube oil added during the test period.
- Top lube oil level with engine hot, after a 15 min. shutdown period, at start and end of each test period.
- If excessive, check for heavy loads, improper operation, faulty air compressor, worn valve guides, worn rings/bores.
Specs & values
- 1000 miles/50 hours
- 5000 miles/250 hours
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.