2003 Saturn LW-200 2.2 Ecotec, 206K miles. Almost always full synthetic, & per the manual, I stick to something with the API starburst logo, 5W30, so usually Mobil 1 or Mobil Super, or lately Castrol Edge, previous changes have also included Valvoline or Pennzoil, if Advance Auto Parts had a good deal.
Lately, local Home Depot sells some motor oil. Interval is usually 4K-5K miles. I almost always use Delco PF457G (the one sold at AAP is the one I look for, made by Hengst, the package sold at Walmart is not a Hengst, looks different).
The engine runs well, and the timing chain is not noisy. Some of the early L series w/Ecotec had a smaller oiler for the timing gear, and occasional timing chain failure.