Abstract: An aviation turbo oil having improved load carrying ability (extreme pressure capacity) comprising a major portion of a base oil stock and a minor portion of a mercaptobenzoic acid or mixture of mercaptobenzoic acids.

Abstract: The detergent inhibitor package has been found to influence the viscometric properties of SAE 5W lubricants that have less than 5 mass % of non-conventional basestock, use a basestock that has an average base stock neutral number not less than 105, a calibrated Noack volatility of not more than 22 wt. % loss, and a kinematic viscosity at 100.degree. C. (kV 100, measured by ASTM D445) less than 12.5 cSt. In particular, neutral and overbased calcium salts of organic acids have been found to increase low temperature high shear viscosity when measured in the CCS (ASTM D5293). These salts which are widely used for their detergency and acid neutralization properties should be avoided altogether or used at a level not exceeding 0.0007 moles of organic calcium salt per 100 grams of lubricant. Where diesel performance is required, for example to lubricate passenger car diesel engines, a calcium salt of an organic acid may be required to control piston deposits.

Abstract: A high temperature long bearing life grease is disclosed comprising a wax isomerate based base stock plus an antioxidant consisting of a metal salt and a diphenyl amine. The base stock may be 100% wax isomerate oil or mixture of wax isomerate oil and mineral oil boiling in the lube oil boiling range.