A Turbocharged Diesel Engine Test for Evaluating Ring Sticking Tendencies of High Quality Diesel Engine Oils

The use of a European 5945 cc (363 cubic inch displacement, CID) engine and 300 hour test procedure is evaluated as a means of predicting the ring sticking tendencies of crankcase oils in turbocharged diesel engines. Correlative data are provided with the Caterpillar OL-1 Test. The 5945 cc engine test identifies the ring sticking tendencies of two oils in the same manner as the known field histories of these lubricants.

Progress is reported on test development and refinement. Test results show the superior ability of a selected oil formulation to minimize piston ring sticking tendencies.