How to Procedures How to Procedures How to Select Lubricating Oil Refer to DDC-SVC-BRO-0001 for more information. Detroit Fluids Specification (DFS) DFS 93K223 (API FA-4) or DFS 93K222 (API CK-4) oils are recommended for use in the engine. For optimal fuel economy, use DFS 93K223 approved API FA-4 engine oil. Cold Weather Starting NOTICE: Monograde oils should not be used in the engine, regardless of API service classification. Monograde oils gel at lower ambient temperatures, reducing lubricant flow, and do not provide adequate lubricity at higher engine operating temperatures resulting in severe engine damage.
For picking a lubricant for low temperature applications refer to the section "How to Select Lubricating Oil". See DDC-SVC-BRO-0001 . Use of Synthetic Oils NOTE: Synthetic oil does not permit extension of recommended oil drain intervals. 82 All information subject to change without notice. Copyright © 2017 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0192