I used Red Line 5w30. You cannot go wrong with this motor oil. Another oil I would use is Amsoil. I can get that locally for a pretty good price, so once I go through my 12qts of Red Line, Amsoil will be next.
I used Castrol Syntec in my Subaru with no complaints.
When it really comes down to it, you cannot go wrong with Mobil 1 (minus the fuel dillution, from what Ive read), Valvoline, Red Line, Amsoil, Royal Purple, Castrol, etc. Keep it synthetic, and you will be safe, no matter what name brand motor oil you are using. I have never been a fan of Penzoil, heard some stuff about it a while back, and its been tainted ever since, to me.
I really dont even see much sense in spending as much as I did on the Red Line. Will I ever see the long, long term affects of a cheaper, but still name brand synthetic motor oil? Heavens no.
Even so, I cant help but use some of the finest fluids I can find, Im very particular when it comes to my vehicles. My dad came down to the shop and asks, "why are you changing you tranny fluid when youve only had it for a week? I never change my fluids as much as you do." I told him Im not the kind of guy who will drive 8k miles between oil changes like him. Im particular and I didnt like what the dealer put in there at the factory. The dealer had actually put 5w20 in there before I bought it, and it was tearing me up inside.
I just drained the factory tranny fluid and refilled with MT-90. It wasnt a life changing experience, but it does feel smoother. Not as much of a differnence that some make it seem to be. A lot of it may be that its not below freezing here and we dont usually see extreme lows. Ive only had the car for 1k miles now, so Im not as familiar with the car as some may be.
The name of the oil isnt near as important as the interval in which it is changed.
That all may have been more than you were asking for, but it may help someone in the future.
