Chevron Japan Limited

Chevron Oronite Company LLC

Chihiro Sone

Koichi Kubo

Yoshitaka Takeuchi

Yat Fan Suen

Taiki Hattori

Masaya Kanauchi

Trevor W Miller

Provided is a lubricating oil composition having a HTHS viscosity at 150&#xb0; C. in a range of about 1.7 to about 3.2 mPa s and a low temperature cold cranking viscosity of less than 7,000 mPa s at &#x2212;20&#xb0; C., comprising: (a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100&#xb0; C. of from 3.5 mm/s to 20 mm/s and a viscosity index of greater than 120 with a sulfur content of less than 0.03 wt. %, are classified into the API group III, IV, or V base stock category, and have an aromatics content (C) of less than 5%; (b) an organomolybdenum compound; (c) a dispersed hydrated alkali metal borate compound; (e) one or more dispersants; (f) one or more calcium-based metal detergents; and (g) optionally, one or more magnesium-based metal detergents. Also provided is a method for improving wear, high temperature detergency, and thermal stability in an engine comprising operating said engine with said lubricating oil composition.

Low viscosity lubricating oil compositions

Growing community of inventors

Makinohara, Japan

Chihiro Sone