Engine Oil Multigrade 20W40

Z Premium Engine Oil Multigrade 20W40, The superior additive chemistry ensures better engine cleanliness, provides high engine protection against wear and corrosion. This oil formulated to pass viscosity tests across a range of weights. For example, 20W40 meets the requirements for 20-weight at cold temperatures and 40-weight at high temps. Motor oil is like every other fluid in that its viscosity varies with temperature and pressure.