SAE 15W-40 Heavy Duty Diesel Engine Oil is a high Zn/P package for natural gas engines such as
Cummins L10 B and C series (Cummins 20074) and similar engines with slider followers. It is a low ash formula
includes a balanced dispersant-inhibitor multifunctional additive package chosen specifically for L.P. and natural
gas engine service. It provides superior deposit control and protection against wear, oil oxidation, and oil
nitration in high-output natural gas engines and is formulated to meet the performance requirement of API
service categories CI-4/SL.