Exxon Chemical Patents, Inc.

Emil J Meny

Rolfe J Hartley

Charles F Hoffman

Antonio Gutierrez

Roger K Nibert

Patrick J Colby

George M Tiffany

A two-cycle oil is disclosed comprising a polyisobutylene amine, a dispersant, a polybutene polymer, solvent and lubricating oil which exhibits improved performance.

Two-cycle lubricating oil containing polyisobutylene amine

The present invention provides functional fluid compositions containing a major portion of oil of lubricating viscosity and a novel and synergistic combination of an acylated nitrogen-containing compound having an olefinic substituent averaging in carbon number from 20 to 60 and at least one ashless detergent/dispersant.

Synergistic combinations for use in functional fluid compositions

A modified SAE No. 2 friction machine is used to evaluate the clutch friction properties of motorcycle lubricants in a process comprising measuring the torque after a break-in period at three temperature points within the ranges 30.degree.-60.degree. C., 70.degree.-90.degree. C. and 110.degree.-150.degree. C. over a 10 second period while the speed of the motor driving the clutch plates varies from 0-300 rpm and the clutch plate pressure is held at 50 psi.

Clutch friction test for motorcycle lubricants

A two-cycle oil is disclosed comprising a high and low molecular weight polybutene polymer, solvent and mineral oil which has suitable viscosity and exhibits improved smoke performance in the JASO test.

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Summit, NJ, United States of America

Emil J Meny