1.1 This test method covers the use of gas chromatography to determine the amount of diesel fuel in used engine lubricat-ing oil. This test is limited to SAE 30 oil. The diesel fuel diluent is analyzed at concentrations up to 12 % by mass.
N OTE 1—This test method may be applicable to higher viscosity grade oils. However, such oils were not included in the program used to develop the precision statement.
