Trans cooler used for oil

your not pumping all of your oil through your cooler before it goes to your engine just a small amount . you only need a quart or so a min going through your cooler if that much .
on a remote oil filter you should have bigger lines like was said because all of your oil goes through it before it goes to the engine .

Ok, so we're talking 2 different plumbing scenario's. The original poster didn't specify how he intended on plumbing it.

I have not had the opportunity to look at how the factory did it but I have looked at how a whole bunch of racers do it and from what I've seen all were plumbed like mine where all the oil flows through the cooler. That's why I said the lines need to be at least 1/2".