I will be doing a BP oil cooler and EGR cooler upgrade next week and was wondering about the bypass oil filter option. BP includes a 1/4 inch plug to fill the port on their cooler. This port can be used for the bypass filtration or temps pressures etc. Since it will be close to impossible to put the 90 degree fitting into the cooler after the install is done without removing the condenser again I was thinking about installing a 90 degree fitting and hooking up a length of hose over to the passenger side. I would just plug the hose for now until I do the bypass filter in the future. My question is really about what hose material should I use. My first thought is hydraulic hose based on the hoses the BP uses for their kit but wanted to see what others are using.