Well, guess I should chime in here...
I have 3 Ecotec 2.2 motors. My aunt has a 11' Cruze with the 1.8.
From my experience, they are a pretty tough motor.
THey've all run dino to the best syntheticx. And they all still run fine, with no issues. Only oil related issue I had is that one of them started burning off M1, which ended quick with a switch to another syn. Ran M1 in another one with no issues at all, so that must have been a one car thing.
Aunt's 1.8 has 52k on it now, and runs great with no issues. And it has been fed a steady diet of kendall semi syn 5w30 from her local Firestone. Car has been flawless so far....