Yeah, I did the same for my oil return line, but the shop had to silver solder US fittings to make up the hose. We don't seem to have anyone local that works with metric hose fittings other than some hydrolic fittings, but even these guys told me to go to a radiator shop to get what I needed. So, I would like to know a vendor or would like to buy some fittings from people here. I will post sizes and specific types if needed. Thanks