you're free to spend your time and money however you want, since this is a "free" country lol... but I wouldn't change the oil that often because my time is precious and the money spent is 2 tanks of gas already... especially of the fact that I don't consider needlessly changing oil on a hot summer day, "therapeutic" lol
I used to be a believer in 3000 mile oil changes and "spark is spark" ("any spark plug works fine" / "don't waste your money on expensive spark plugs")... but I don't anymore... exponential advances in automotive technology in the past 25 years, let alone the past 50 years due to government mandates on fuel economy and emissions have essentially forced engineers/manufacturers to come out with better/more efficient products... used to be and still is, you can slap any mundane maintenance/ancillary part in your car and it wouldn't really make much difference... I know because I tried it in my very 90s beat up corolla beater before to try to eek 1MPG more out of it, and it didn't work... but now with modern auto/engine technologies, everything works like a symphony... use the right parts, and it's at the sweet spot and works in harmony... one seemingly inconsequential "dumb" part might make a difference in 1MPG, such as oil and spark plugs...
so rather than letting "old habits die hard", I kept an open mind over the years and continued to educate myself on these advancements, which all seem to be marketing ploys.... because there is certainly a lot of marketing fluff and hoopla out there... but research on reviews/anecdotes from others helps make informed purchase decisions, thanks to the interwebs lol
no regrets on this method... I've been able to be smarter with my time and money this way
unless you absolutely dog on your car on the track and cook the hell out of the oil, I'm betting 99% chances you won't need to change your oil in the short amount of hours or less than 3000 miles... every synthetic oil these days easily handles 5000 miles, even with spirited driving during the dog days of summer... 7500 is still a very safe figure, and from there to 10k, it depends on how/where you drive the car, plus oil analysis... in good, smooth running, clean engines like the skyactiv (at least non-turbo), most people's oil analyses show that 9k to 10k is pretty safe... no doubts to me that 10k is definitely safe with an oil cooler on a non-turbo skyactiv... maybe I'll take a sample and send it in when/if I ever get an oil cooler added lol
as for the filters, those new "USA" value line PE01/PY01 filters appears to be made by honeywell... the design looks too familiar lol... the old mexico made ones had lots of issues with leaks apparently, and people on the BITOG forums have said that the contact surface area of the gasket isn't as wide as the ones on the 1WPE/1WPY or good japanese PE01/PY01 filters, since those round o'rings squish down and spread out once pressure is applied on them... coupon or not, I would've walked away from buying those filters, get them elsewhere, or just buy WIX if I'm in a quick need for a filter and call it a day lol
on a side note, subaru america used to sell the japanese made filters off and on over the years and they last sold them about 17 years ago and switched to the honeywell ones... they're so much more crappier, and the price difference wasn't big back in the days... I haven't cared to look into those filters since then since I don't own a subaru, but I heard that during the "drought" years of selling non-japanese made filters, there were all sorts of issues with them... no doubt to me because of quality issues and the fact that subarus run higher oil pressures than most cars to begin with
