Polymethacrylates for Tomorrow's Multigrade Oils? 700054

Wear tests in a number of European gasoline and diesel engines and a study of deposit formation in Caterpillar 1 H and MS Sequence V B tests show that polymethacrylate VI improvers in multigrade motor oils can lower wear levels below those predicted on the basis of oil viscosity, even under extreme operating conditions; new dispersant type polymethacrylates decrease deposit formation not only in MS Sequence V B but also in Caterpillar 1 H tests; and polymethacrylates should continue to play their important role in the formulation of multigrade motor oils.


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