Advanced low viscosity synthetic passenger vehicle engine oils

Abstract

Premium quality synthetic passenger vehicle engine oils have been marketed by the authors' company since the early 1970s. During this time, the performance benefits of synthetic-based engine oils have been documented in a wide variety of engine and vehicle tests. The purpose of this paper is to demonstrate that, with the use of synthetic base oils and advanced additive technology, low viscosity oils can be formulated that have high fuel efficiency but which retain superior engine protection and performance reserves. Specifically, two synthetic engine oils, an SAE OW–40 and an SAE OW–30, have been developed that exceed the highest industry standards in both US (AP1)and European (ACEA) fuel economy and durability engine tests. The high quality of this technology is demonstrated in industry-standard engine and laboratory performance tests, as well as non-standard tests, such as extended-length engine tests, vehicle fuel economy tests, high mileage chassis rolls tests, and extended oil drain ‘over-the-road’ vehicle tests.