Hey everyone my parents car just started mixing oil into the coolant reservoir and it has also developed a slight oil leak on the passenger side of the engine, the oil cooler is dry and I’ve read that that could be the problem but I’m not sure. The pcv hose also has a lot of oil in it does anyone have an idea what might be going on? The car has 130000 miles on it and it is a NA LT 2011. It also has some sort of knock that goes away after a while when cold starting which I suspect to be because the cam shafts don’t get oil when the car hasn’t been started. This is my parents car and I use it for commuting to school, thank you!