| abstract |
A marine diesel lubricating oil having a TBN of from about 5 to about 120 containing a base oil of lubricating viscosity, an overbased alkylaryl C 10 -C 40 sulfonate detergent and an overbased isomerized C 10 -C 40 normal alpha olefinic phenate detergent Wherein the weight ratio of the overbased sulfonate detergent to the overbased isomerized nitrile normal alpha olefinic phenate detergent ranges from 1: 9 to 9: 1. |