The last step before firing up the freshly tuned and adjusted S38 was to change the oil. I had poured some fresh oil over the cams and valves before I secured the valve cover. After draining the used oil, I decided to fill and drain the engine one more time in an abundance of caution because the valve cover and intake had been off the car for so long. I didn’t actually start the car, but cranked it over for a while with the ignition unplugged just to get the oil pressure up. I then drained the clean oil and then filled it again.
The oil filter housing had always been half-covered in cosmoline. I now used my ultrasonic cleaner to get it all cleaned up before inserting a new oil filter and installing it on the car.