HOW-TO SECTION Category CG-4 may be used in engines built prior to 1998 when API CI-4 or CH-4 oils are not available. oils must possess a HT/HS of 3.7 minimum. NOTE: Do not use fuel with sulfur content above 0.05 mass percent for Detroit Diesel EGR-equipped engines. NOTE: The use of CG-4 oils in these engines may require a reduction in oil drain interval, depending upon the application and the fuel sulfur level. When the use of high sulfur fuel (greater than 0.05% mass sulfur) in non-EGR engines is unavoidable, high alkalinity (TBN) lubricants are recommended. High sulfur fuels require modification to oil drain intervals.
For further information, refer to publication Engine Requirements – Lubricating Oil, Fuel and Filters , 7SE270, available from authorized Detroit Diesel distributors. Cold Weather Starting At ambient temperatures below –20°C (–4°F) when sufficient starter speed cannot be achieved with SAE 15W-40 oils, the use of 5W-XX oils and 10W-XX oils (XX =30 or 40) is allowed to improve starting. NOTICE: Synthetic Oils Monograde oils should not be used in Series 60 engines, regardless of API service classification. Monograde oils gel at lower ambient temperatures, reducing lubricant flow, and they do not provide adequate lubricity at higher engine operating temperatures.
These factors can result in severe engine damage. Synthetic oils may be used in Detroit Diesel engines, provided they are API licensed and meet the performance and chemical requirements of non-synthetic oils outlined in this publication. Synthetic oils offer improved low-temperature flow properties and high-temperature oxidation resistance. However, they are generally more costly than non-synthetic oils. The oils must be API CI-4 (for EGR-equipped engines) or API CI-4 or CH-4 (for non-EGR-equipped engines) and have demonstrated field performance in DDC engines. These Product information about synthetic oils should be reviewed carefully.
Performance additive systems often respond differently in synthetic oils. 76 All information subject to change without notice. DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION