I have been installing a 1974 Mercedes 240d engine and trans into my car. I got to the point where I hooked up an oil pressure gauge, and it buried the needle on an 80 lb gauge. I then tried a 100lb gauge with the same results. I now have installed a 200lb autometer super comp gauge and off idle and in about the mid range of rpm it is reading past 200lbs and I am guessing from the needle position that it is maxing out around 230 lbs. This does not seem right to me.