Bruce Nunnally Posted January 20, 2004 Report Share Posted January 20, 2004 So the new 3.6L VVT V6 will take regular or premium octane. However, it does have a knock sensor on each cylinder, and the notes in the manual suggest that while you can use regular unleaded, performance will suffer. For maximum performance, then, should I run premium all the time, or would it be reasonable to run premium in the summer, when knock is more of a problem, and regular unleaded in the winter when lower operating temps make knock less likely? Bruce 2016 Cadillac ATS-V gray/black Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.