Diesel Engine Pre-Oiler Pump

[yamajason]

What I am planning here is a pre-oiler that works for the 5 seconds you turn the Ignition key to ON while waiting for the glow plugs to warm up oil is flowing. I want 2 million miles out of my next camshaft. Wiring is the easy part here, plumbing is the challenge. I am going to get an oil cooler by itself to play with and remove port plugs, blow air thru it, and map out these ports for all to know. Wish I could get a CAD drawing of the oil cooler that shows internal views of parts