Dodge D250 1990 - Break-In Oils; Oil Performance Recommendations; Oil Viscosity Recommendations

I
Lubrication and Maintenance
DODGE Turbo Diesei
Operating Instructions
Page OB-11
Oil Performance Recommendations
Use CE/SF or CE/SG grade oil (equivalent to MIL-L-45199B) in your Cummins Turbo Diesel Engine.
Note: CC/CD or CD/SF oils can be used in areas where CE oil is not yet available.
Dual Category oils provide the performance required of each individual category. For example, a CC/CD oil is
blended to meet both CC and CD performance levels.
A Sulfated Ash Limit is specified for lubricating oil used in the Cummins Turbo Diesel Engine. Past experience has
shown that oils with a high ash content may produce deposits on valves that can progress to guttering and valve
burning. A maximum sulfated ash content of 1.85 mass % is recommended for all oil used in the engine.
Do not use special "break-in" lubricating oils In the Cummins Turbo Diesel Engine. Use the lubricating oils
specified for normal engine operation. (See Section OE - Lubricating Oil Specifications for complete details).
Oil viscosity recommendations
Use a multi-graded* oil, with the viscosity grades shown below, in the Cummins Turbo Diesel Engine. The use of
single grade lubricating oil is not recommended.
The same oil change interval is to be followed
for synthetic oil as for petroleum based oil.
Also, synthetic oil must meet the same performance
specifications as petroleum oil. (See Section OE
for Lubricating Oil Specifications)
Break-In oils
Without Block Heater
Synthetic Oil**
5W30
Notes:
*
20W20 is not considered a multi-grade oil.