Phillips 66® Guardol ECT (Emission Compatible Technology) Synthetic Blend Diesel Engine Oil is a premium quality, part-synthetic API CK-4 engine oil developed for use in four-stroke cycle diesel engines designed to meet 2007 and later EPA on-highway exhaust emissions standards. It is specially formulated for compatibility with exhaust aftertreatment systems using diesel particulate filters (DPF), diesel oxidation catalysts (DOC) and/or selective catalytic reduction (SCR). It is backward serviceable for use in pre-2007 diesel engines.
Excellent protection for newer low-emission diesel engines and older diesel engines
Specially formulated to protect exhaust aftertreatment systems
Exclusive Liquid Titanium protection additive provides enhanced oxidation resistance and protection against engine wear
Outstanding soot control for protection against abrasive wear and soot-induced oil thickening
Outstanding resistance to viscosity and thermal breakdown at high temperatures
Protects against sludge and varnish formation
Protects against rust and bearing corrosion
Excellent low-temperature pumpability with soot-laden oil
High shear stability
Good resistance to foaming and aeration
