Exceeds API Service Categories for heavy-duty-diesel engine oil: CK-4, CJ-4, CI-4, CI-4 Plus and older.

SynShield Durability Advantage 15W-40 Engine Oil is a premium advanced performance, synthetic plus, heavy-duty diesel engine oil formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration.

SynShield Durability Advantage 15W-40 Engine Oil provides excellent equipment durability and longevity even during harsh, extreme duty operating conditions. Using our proprietary friction modifiers, Micron Moly® and Penetro®, SynShield Durability Advantage 15W-40 creates a slippery, tenacious shield that prevents metal-to-metal contact. This added layer of durability protection significantly reduces wear on bearings, rings, pistons, cylinders and valve trains.

Our 15W-40 oil is suitable for use in emission compliant engines that utilize heavy exhaust gas recirculation (EGR) and exhaust after-treatment devices such as diesel particulate filters (DPFs) with or without diesel oxidation catalysts (DOCs) and selective catalytic reduction (SCR). SynShield® Durability Advantage 15W-40 Oil can also be used in low-emission certified diesel engines that are equipped with EGR, older non-EGR containing diesel engines, and off-highway diesel engines.

Performance Benefits

Improved wear protection – 85% less wear than conventional CJ-4 oils.
High thermal and oxidative stability for greater resistance to viscosity thickening and the formation of deposits, sludge and varnish.
Strong soot-busting, deposit-dispersing capability – 77% greater soot handling than conventional CJ-4 oils.
Excellent shear stability for stay-in-grade performance throughout the oil drain interval.
Superior low volatility characteristics to control oil consumption.
Improved and optimized engine durability and reliability during high mileage, hour accumulation situations.
Excellent protection against oil aeration and foaming.

Schaeffer’s 15W-40 Synthetic Plus Synshield Diesel Engine Oil #700

Available Options