2010 sho non-pp built 11/09 delivered . 4 years on the nose when the ptu was replaced.
the oil that came out of mine lost all its viscosity when i changed it at 30k and was severely discolorated. I replaced it a few more times within a thousand miles till the oil coming back out was clear. Then i switched to Amsoil 75W140 and it stayed clear in the 10K i put on it since.