Search Results

This paper reviews some of the background which demonstrated that there were significant variations in the performance of commercial CD engine oils in highway truck and other heavy duty applications by the mid - 1970's. The paper reports that by 1979 service experience also showed that engine miles to overhaul were significantly improved when SAE 15W-40 oils were used in place of the earlier typical SAE 30 products. By 1983 it had been established that there was a 2 to 1 variation in miles to overhaul between the poor and the best 15W-40 oils. This service background was the stimulus for the development of a proprietary heavy duty diesel engine oil intended to provide customers with a product incorporating the best available engine oil technology. The initial objective was to maximize engine durability.