Three years ago last May my wife and I bought a new 03 Subaru Forester for her. I told the owner of my gas station/independent repair shop that I hoped they were familiar with Subarus, tho I was sure they were as there's Subarus all over Montana. The owner told me that he has been servicing, since it was new, a Subaru wagon that "a little old lady" owns that, at that time, had 875,000 miles on it, all on the original engine. This is the H or Boxer, 2.5 liter, 4 cyl., engine, with the cylinders that move sideways instead of up and down, that Subaru's used for a long time. He said it burned a little oil, but not much. I got the impression that he maintained it regularly, and he's a believer in the 3,000 mile oil and oil filter change.