VR-1 10w30 has been in my 408 since 2009 and I had it apart last year and it was in great shape.Didn't need to change the bearings but I did anyway. No reason for me to go to another brand of oil.

77 Aspen R/T 60'@1.41 10.76 @ 123.26

http://www.youtube.com/watch?v=Eya3Ue8KoZk