Owners manual

QSB4.5 and QSB6.7 Lubricating Oil Recommendations and Specifications
Section V - Maintenance Specifications Page V-9
Cummins Inc. recommends the use of a high-quality SAE 15W-40 heavy-duty engine oil, such as Valvoline Premium
Blue™, which meets or exceeds the American Petroleum Institute (API) performance classification CH-4/SJ or CI-4/
SK and the Association des Constructeurs Européen d'Automobiles (A.C.E.A.) performance classification E5 or E7.
Cummins® Engineering
Standard Classifications
(CES)
American Petroleum
Institute Classification
(API)
European Classification
(ACEA)
Comments
API CD API CE ACEA E-1, ACEA E-2 OBSOLETE. DO NOT
USE.
CES-20075 API CF-4/SG, API CG-4/SH ACEA E-3 Minimum acceptable oil
classification for Midrange
engines.
(1)
CES-20071, CES-20072,
CES-20076, CES-20077
API CH-4/SJ ACEA E-5, E-7 Good oil classification for
Midrange engines without
EGR.
CES-20078 API CI-4/SK Excellent oil for Midrange
engines.
1. CG-4/SH and E-3 oils can be used in areas where none of the recommended oils are available, but the oil drain
interval must be reduced by one half of the interval given in the maintenance schedule. See the oil drain interval
information in Section 2.
A sulfated ash limit of 1.0 mass percent is suggested for optimum valve and piston deposit, and oil consumption
control. The sulfated ash must not exceed 1.85 mass percent.
Special “break-in” oils are not recommended for use in new or rebuilt Cummins® engines. Use the same lubricating oil
that will be used in normal engine operations.