e58 police oil cooler

When it comes to the cooler. Th oil is feed from the oil pressure sender port next the distributor and the cooler has a thermostat valve at the input fitting on the cooler. After the oil passes through the cooler to special bolt that is restricted and squirts the oil on the timing chain. The system looks well engineered. I have a lot of experience with remote oil filters and coolers on aircooled vw off-road cars. But that's a totally different application.