I did some experiments today using different lubricants on the heads of a Norelco 1662 dual headed shaver. I compared ESC Maintenance Oil, a light, food-safe mineral oil for electric shavers and hair trimmers, with Biokleen Chain & Parts Lube, a green, biodegradable ester-based household lubricant (sold as an alternative to WD-40). I used some new, generic HQ2 heads from China. I did several runs of 3 minutes and recorded the temperatures using an infrared automotive thermometer. The head lubricated with Biokleen was consistently cooler than the head lubricated with mineral oil, averaging about 3 degrees (F) cooler overall.
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