[Jmbasile]

Originally Posted by remdds

Any of these will keep you and GM happy.

GM4718M Registered Products [for V8]
High Performance Engine Oil Specifications
Revision Date: 18-Sep-2008

Product Name SAE Viscosity Grades
76 Super Synthetic Motor Oil 5W-30, 10W-30
AC Delco Full Synthetic 5W-30
Castrol SLX Professional 4718 5W-30
Chevron Supreme Synthetic 5W-30, 10W-30
CITGO SUPERGARD Synthetic 5W-30, 10W-30
Kendall GT-1 Ultimate Synthetic Motor Oil 5W-30, 10W-30
Mobil 1 0W-30, 5W-30, 10W-30
Northland, Synergy Synthetic 5W-30
Pennzoil Platinum Full Synthetic 5W-30, 10W-30
Q HorsePower 5W-30, 10W-30
Texaco Havoline Synthetic 5W-30, 10W-30

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nice info. thakns a lot