Just curious to see what everyone uses... I use mobil 1 5w30 synthetic ....but Im curious if Quaker State Q for high horsepower engines has been used and if its any good?
lol I didnt even think about royal purple when I made the poll my apologies... I heard of royal purple but never had any experience with it.... Started using Mobil1 a long time ago on my Jetta and in my friend's LT-1 Z28 and there was a NOTICEABLE difference in driving feel (less vibration from the engine). I now am starting to wonder how well royal purple is lol...
*actually, you might just want to save yourself the time. i couldn't find the specific thread i was looking for so i'm sure you wouldn't be able to either.*