If you want to keep your warranty in effect, you had better follow the factory recommendations. When I worked at a Subaru store a customer went 12,000 miles before changing oil because the oil company said it would go that far… the engine blew up! Then the owner sued, even though he didn’t follow factory recommendations of 6,000 miles. He lost.On a hybrid that doesn't even run all the time? 15k changes is my plan for my hybrid. 185k on my 2012 focus with 15k oil changes. I drive it pretty hard (the 2.0 DI is an underappreciated engine). It has perfect compression, oil analysis shows in tolerance at 18k (I got lazy last year) and it burns about 0.5oz every 1000 miles.
Maybe the turbo versions are more fragile?
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