W. H. Richman

ADVANCED SYNTHETIC PASSENGER VEHICLE ENGINE OILS FOR EXTENDED OIL DRAIN PERFORMANCE

W. A. Givens, R. J. Bergstra, W. L. Maxwell, 1998 .

Advances in High Performance Synthetic Oil Technology

W. L. Maxwell, I. R. Morris, W. H. Richman, 1995 .

A Synthetic Diesel Engine Oil with Extended Laboratory Test and Field Service Performance

J. R. Lohuis, W. H. Richman, S. Kennedy, 1995 .

AN ENGINE OIL FORMULATED FOR OPTIMIZED ENGINE PERFORMANCE

W. H. Richman, J. A. Keller, W. H. Richman, 1975 .