1999 Chevrolet Corvette, 5.7 V8, 6 Speed
Out: Sticker said QS 10W-30, unsure if synthetic, HM, or conventional, STP Ecore filter
In: 6 1/2 Quarts QS Synthetic 10W-30, Driveworks DW-4006 filter
Also changed trans. fluid and gear oil.
Trans.
Out: O'Reilly Dex/Merc
In: Just over 3 quarts O'Reilly Dex/Merc
Rear Diff.
Out: Something grey and nasty
In: Just under 2 quarts O'Reilly Master Pro 75W-90, 4 oz. Lube Guard Limited Slip additive.
And...
2007 Ford Mustang GT, 4.6 V8, 5 speed
Out: 76 Synthetic Blend 5W-30, Motorcraft FL-820S filter
In: 6 Quarts QS conventional 10W-30, Driveworks DW-4651 filter.