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 also gathered that ester base oils are superior. Now that brings up my question. I'm still experimenting trying to find what I like best in terms of oils, so I've lined up my choices for the next OC. They are, in no particular order: Fuchs Silkolene Pro S 5w-40 Motul 300V Power 5w-40 Elf Excellium LDX 5w-40 Agip Synthetic 5w-40 Pentosin Synthetic 5w-40 Now, I am led to believe that the Fuchs and Agip oils are using ester base oils. Anyone know the percentage? I searched but found no indication of whether the Pentosin and and Elf are using ester base stocks. I like the Motul, but the car takes 6 qts each oil change and as you can imagine, that plus the cost of the $10 OEM filter can get a bit pricey. If there is general agreement that it(Motul) is the best choice for my application, then I'll stick with it, but if there is something that can do the same or better job, then I'll want to try it out. Basically, what I'm looking for out of the oil is max protection along with good performance. Long drain intervals aren't a big concern as I only drive about 6k miles a year. This forum is quite a learning experience for me . Thanks much in advance.