Mobil Delvac 1 5W-40 maintains outstanding performance at high temperatures. It is also fully compatible with conventional oils. The key benefits include: Meets or exceeds demanding specifications of major OEMs - One engine oil for mixed fleet operations Outstanding thermal and oxidation stability helps control low temperature sludge build-up and high temperature deposits Low volatility, excellent wear and bore polish control - Good oil consumption control Expertly formulated low viscosity formulation Exceptional low temperature pumpability - Easier engine start-up and reduced wear Good resistance to corrosion - Helps towards long life of critical wear surfaces Long drain capability - Helps towards operational efficiency and overall cost controlComponent compatibility - Long gasket and seal life, extended service intervals.