Testing the Dilution Rate of Diesel in Engine Oil in Accordance with ASTM D3524

Introduction

If gasoline or diesel mixes into the engine oil, it decreases the oil viscosity and prevents achievement of the proper performance as a lubricating oil. Measuring the fuel dilution rate serves as a key indicator during oil replacement, because it can determine the degradation status of the engine oil. The test methods used to measure the fuel dilution rate are specified in standards such as U.S. ASTM D3524, D3525, and D7593. Diesel dilution rate testing methods are specified in ASTM D3524 and JPI-5S-23. This article describes an example of measuring the dilution rate of diesel in engine oil in accordance with ASTM standards

June 25, 2023 GMT