[XtremeRevolution]

Many have exceed that interval in the CTD, using higher grade oils than GM's dexos2 oil. Here is an oil analysis of the CTD using AMSOIL's 5W-30 low-saps oil as the first, and Total Quartz Ineo MC3 for the remaining samples.

 

[XtremeRevolution]

Moved thread out of the how-to library section.

 

[XtremeRevolution]

There are exceptions, but they aren't that common. I have a turbo instruction manual a friend sent me for a Subaru turbo that specifically states NOT to use Mobil 1 with this turbo as it has been demonstrated a cause of failure. Those cases, however, are few and far between.