[Rifle]

Originally Posted by johnmk

Almost everything I've read that's trustworthy says to leave it in the car for as long as the manual says to. This appears to be of somewhat greater than normal importance with the first oil change, in fact, because there's an additive in the first, factory oil-fill that assists in breaking-in the engine in the best possible manner, and all the breaking in that's necessary might not yet have occurred within 2-3,000 miles. Switching to another oil too soon will leave you without this additive, while your engine is still breaking in. On top of that, also according to what I've read (mostly on bobistheoilguy), synthetic oil increases in quality, up to a point, as it ages. Tossing out a finely aged and still fully healthy synthetic oil, in the prime of its life, containing a special factory additive that you'll never have again, seems illogical.

Based on my research, I changed my oil at around 6,000 miles and was very comfortable with that decision.

I changed mine at 5600 miles as well, just noting what I spotted in an email from subaru.