HEAVY DUTY DIESEL (HDD) 15W-40 is designed to meet the warranty requirements of most manufacturers of diesel engines equipped with EGR and was specifically developed for diesel engines operating on high sulfur fuels. The high alkaline reserve (TBN) effectively protects bearings and other engine surfaces from the corrosive effect of acids formed by the combustion of high sulfur fuels. Recommended for extended drain service when suggested by original equipment manufacturer.
This motor oil is a blend of highly refined base oils and specially selected additives designed to provide excellent performance in all recommended applications. Contains effective detergent-dispersant to keep sludge and varnish deposits to a minimum. Additionally fortified with oxidation-corrosion inhibitors, high temperature anti- wear additives and foam inhibitors, to protect vital engine parts from scuffing and protect bearings from corrosion.