Grex sandwichplate flow direction?
Hi! I'm in the progress of installing an oil cooler in my R33. It's a Grex/Greddy oil cooler kit which includes everything you need for Installing, all good. The question is I'm not sure which port on the thermostat that is inlet an which is outlet? (look at picture)
BTW will the Grex thermostat allow any oil through the oil cooler when the Engine is still cold? or do I have to wait until it opens to be able to top up the oil level?
Thanks in advance!