Alright guys, first post. Been a lurker for a while and have searched/researched this topic as much as possible. First off, I am currently running Motul 300V Power 5w-40 in my 1995 Volvo 850 Turbo w/ about 100k miles on it. From what I've read, it (the Motul) uses a 100% diester base oil. I've...