Oil Recommendations: 2-stroke and 4-stroke Detroit Diesel engines
Detroit Diesel Temperature Range
These recommendations apply within the normal ambient temperature range.
For extreme cold, that is at temperatures below -32 degreesC (-25 degreesF), the oil recommendations change.
Consult your oil supplier for further advice.
Detroit Diesel: Oil for 2-stroke and 4-stroke Engines
Use SAE 40 Mono grade oil
Use 15W-40 multigrade oil
There are no sulphated ash limits imposed for Detroit Diesel 4-cycle engines.
Detroit Diesel: Changing oil and filters
New Engines or newly overhauled engines
First oil and filter change:
After 50 hours of operation
Change oil every 150 hours
Change filters every 450 hours
Elements allowed in oil of Detroit Diesel 2-stroke engines
Detroit Diesel 2 stroke engines
Normal and max levels of allowable Elements in oil:
normal 15 max 20
normal 15 max 25
normal 65 max 150
normal 20 max 25
normal 35 max 40
normal 30 max 40
Excess levels of allowable elements in oil of 2 stroke engines
Indicates problems with:
Copper Bushings, bearings, thrust washers
Iron Liners, gears, camshafts
Lead Bearing overlay material
Silicon Dust, air leaks
Sodium Internal water leaks
Tin Piston plating
Trace elements found by oil analysis in Detroit Diesel 2-stroke engines, are in some cases quite different from the normal ranges of elements found in 4-stroke cycle engines, therefore special mention of the 2-stroke ranges is made here.