I want to down size my oil coolers I feel they are cooling to much. what sizes seem to work the best. Getting some milk at top of heads. Twin 572 600hp. also want to go to 160-180 thermostat. Right now oil temp does not come up unless I bring it up to 3000 rpm. Looking at 8 - 12 long coolers. They are separate from steering cooler. Deffinately getting condensation now from oil coolers