Cobra Supercharger Oil
When Chris mentioned getting a fluid change for the blower while his Cobra was at my shop getting some things done, I knew there was a lot of advice and opinion out there about using fluid other than the VERY expensive Ford stuff. Since I don't personally own a Cobra I could not speak to first-hand experience regarding use of a different oil, and, I don’t use customer vehicles as guinea pigs, so I decided to get it straight from the horse's mouth (so to speak). I called Eaton and spoke to a fellow engineer about their recommendation, and also about the less expensive GM oil (and others). After all, they are the ones who manufacture them so who better to get an accurate, un-biased recommendation from… right? I learned from Eaton that the GM oil is the EXACT same formulation # as the Ford stuff. Since I had also seen guys recommending Mobil 1 synthetics, I asked him about it and he told me, and I quote, " Do not use that or any other MOTOR oil in these blowers"! He described what happens if those other oils are used and it wasn't pretty. The GM oil was in stock at my local GM dealer here in DeKalb and was roughly half the price, while the Ford fluid was obtainable the next day by special order. It is important to use the correct fluid.
Just wanted to share this info with you guys.
Joe