I honestly cannot answer that for you. I can see a one way valve would be beneficial. The valve must allow proper flow without any restriction though. In a scenario where the valve fails, your engine won't be happy. I haven''t seen one way valve for alot of Japanese engine set up tbh. My oil cooler and oil filter relocation sits lower than the original oil filter housing so it will always be fill of oil even after the engine is turn off. Hopefully this will help ya!
These bolts are your generic : 6mm x1.0 Grade 10.9 bolts. Varies from 12mm, 15mm, 20mm long. Zinc coated! I just bought boxes of 100. It's fairly cheap.
@@julienchardon9101 yes that is possible but your oil cooler should be clean! If it's clean to begin with, it shouldn't put any debris in the engine. I installed it base on the recommendation from the company that supplied it. If you put the filter after your oil cooler , then that means unfiltered oil can potentially build up in your oil cooler, we don't want that.
