Posted Saturday, May 3, 2025 at 10:16pm
When it comes to Subaru engines, attention generally falls to the boxer four. And why not? From the old EJ22T to the EJ25 that powered pretty much every Subaru at one point, it’s the engine that’s synonymous with the Japanese brand.
That’s what makes this I Do Cars video so interesting. It focuses on the lesser-known 3.0-liter EZ30 flat-six, pulled from a 2005 Subaru Outback that had just over 200,000 miles. We’re used to seeing complete carnage from these teardown videos, and this engine was deemed too faulty to save. But the diagnosis was the result of a failed leakdown test, and upon inspection, it’s not immediately clear what might’ve happened.
