Mobil Jet Oil II is a high performance lubricant formulated for aircraft gas turbine engines. It provides excellent thermal and oxidative stability to resist deterioration up to 400°F. Mobil Jet Oil II maintains engine efficiency, extends component life, and protects against wear and corrosion across a wide operating temperature range from -40°F to 400°F. It is approved for use in both commercial and military aircraft gas turbine engines.