Yes another oil thread but I am all about finding parts and fluids that are readily available and thus inexpensive. Though when it comes to transmission oil for the nv4500 you must use this magical oil that is no longer produced or use an alternative oil that has to be shipped or go to a dealership so we don't destroy our transmissions. Well I can see why the fear mongering works here, because it's an expensive transmission and rebuilding it is probably not everyones ideal weekend activity... also you won't be changing the oil very often. But there has to be an oil that meets or exceeds the oem specs and available at auto parts stores or walmart. Recently there is someone on another forum that uses Mobil Delvac Synthetic Trans Fluid 50w mobil.com/english-US/Commercial-Vehicle-Lube/pds/NAXXMobil-Delvac-Synthetic-Transmission-Fluid-50. It meets and exceeds the oem specs, shouldn't harm the carbon fiber syncros and is readily available. The only concern I would have is the temperature between the gears. Does anyone have experience with this lube?