Hey guys so I'm coming up on my first oil change on my brand new 2017 wrx. My sales guy, who is a Subaru ambassador and has a wrx, said he uses AMSoil signature series full synthetic I wanted to see what you guys thought about this oil. I called subaru service and they said if I didn't use my own oil they use Mobile one full synthetic. I know if I start to use AMSoil I need to continue with this oil all the time and not flip flop on oil which I'm ok with. I read another thread on here talking about diff oil filters, if I use AMSoil should I get a diff oil filter or will the oil filter at subaru be sufficient. Any experience or advice would be great.