Michael,quote:
Originally posted by Michael Wan:
GM says that you must use a 5w-30 that is 6094M approved when using the oil life monitor.
Notice that Valvoline isn't 6094M approved.
SNIP
I'm certain you knew this, but all 6094M really means is that the oil has good low-temp pumpability. It shouldn't help at all with extended OCIs.