The development of new lubricant systems compatible with modern e-drive conditions, including stray voltages and currents, has gained momentum in recent years. One of the strategies being widely evaluated to achieve these goals is the development of conductive lubricants. Greases, however, have a complex architecture which renders measurement and analysis of their electrical properties challenging; this has severely limited the implementation of the strategy for this class of materials. In this work, a measurement methodology implementing electrochemical impedance spectroscopy to evaluate the electrical properties of grease samples is introduced. Compared to the commonly used conductivity meters, this method, through its multi-frequency alternating current (AC) impedance measurement approach, is able to effectively distinguish the separate contributions of the bulk and the sample-electrode interface to the measured electrical response. Thus, the bulk conductivity of a range of greases with different electrical properties could be obtained independently of their interfacial behavior at the electrode. The temperature dependent bulk conductivity of lithium complex grease doped with different ionic liquids and non-ionic solids (copper and graphite) has accordingly been evaluated and the rather different conductivity mechanisms explained. Bulk ionic conductivity of neat ionic liquids has also been measured using a liquid sample specific electrochemical cell, which aids in the interpretation of the ionic liquid based greases.