I believe it does not matter what brand of oil you use as long as you religiously changing oil at specified intervals. Today's oil technologies had advanced that they contain multiple additives to keep the lubricating properties better/longer. What I would think about is, if your S60 is an R is the engine block to keep an eye on.Hello everyone! I've read through most threads on oil that people have been using. But haven't heard a lot about Motul being used. Is it worth it upgrading to Motul for a higher quality synthetic oil? Or any other higher quality ones like AMSOIL or Royal Purple? I've been running Mobil 1, and just switched to Liqui Moly in my daily S60. But looking for something better for my modded S60 and anyones opinions, criticisms, etc on top tier oils.