I have a 2014 Passat TSI 1.8T. I'm having to add 1 quart of oil every 1000 miles or even less. I use Castrol Edge 5w-40 Full Synthetic. There are no obvious signs of a leak and was told it could be the PCV/Oil Separator. I took it off the other day, but it's not like any PCV Valve I've ever messed with. What do I look for? The car is not smoking. I do drive it kind of hard and I live in the state of Georgia which is very hot and humid right now. Should I maybe use a different weight oil? Thanks for the help.