Use whatever subaru recommends. Each manufacturer had their own spec, not just for viscosity but also for various additives. Mobil 1 is probably fine, just call and ask he dealer, they'll be happy to tell you. And don't be afraid of store brand stuff (walmart, o'reilly's, etc):it's made by the name brands and just put in a different bottle and sold for a lower price. I'd recommend using a factory filter, just for piece of mind.

Used to buy filters that I got the best deal on but after having one collapse and block up and cost me an engine I tend to buy good ones. That gets a little pricey!!! Lots of filter test demos on u tube. I use Subaru filters. Can usually get a 6pk online a lot cheaper than at the dealer. Also get Mobil 1 at Walmart for about $23/ 5qt.
On the drain plug of my '18 Forester is a crush ring that they recommend changing each time (they came with my filters).

I've heard of this happening a time or two. A good reminder that some things should not be skimped on!

Mobil 1. I worked in a tire and lube shop right out of high school. I could tell if they had synthetic just by the feelof the used oil. It was just as slick when i took it out as when i put it in. Conventional oil would start to feel watery and gritty.

Used to b able to get $10-12 off a jug(4/household) from Walmart but both mobil an pennzoil removed walmart as a participating vendor. Anybody know why??

If you want to save yourself some headache, purchase a Fumoto valve for your Subaru before changing the oil. Subaru drain plugs are sometimes difficult to remove the first time, and they are 19mm, big hole, oil comes out fast. Install the Fumoto valve and your will never need to remove it. They are machined from brass and stainless with a lever/spring arrangement. Simply remove the lock clip, flip the lever to the open position and watch the oil drain at a reasonable speed. When done, flip the lever back to closed and re-install the lock clip. I also bought the rubber/plastic slide on cover for the drain tube. Keeps it clean.
I am using NAPA Gold filters. You can catch them on sale sometimes for half price. As most have commented, any name brand that meets spec will work. I have been using Quaker State full synthetic.

Here's another independent oil thread if you have the time to read.
https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/

Must be your area. I got a 12 quart box yesterday for $50 at our Walmart.

Well, I went with Mobile 1 and a Mobile one filter. I will get Subaru filters for the next time.

That sounds interesting. Thanks, I'll look into it.

Scrapper-Never to old to learn!! Thank u. Newer tk takes 8qt and old tk and car took 5qt so always got the jugs when special was on with Mobil or Pennzoil. Took it down to 2.50/qt. But that box is the best option now.(4.17). Got one this morning. Thanks again.

I've been using Amsoil, but recently switched to Valvoline full synthetic. I was using Wix filters.

How often do you guys change oil? I was changing filters every 10,000 miles and doing a full oil change every 20,000 miles.

Living in a cold climate plugging in every night with Synthetic oil you get instant oil pressure. I prefer Mobile 1 and have used it for years. I also have a temperature setting Command start for the line and again Mobile 1 keeps the oil pressure right on. It gives peace of mind all winter.

Holy cow, your engine isn’t toast? Every mechanic I’ve ever known does a full oil and filter change every 5,000-7,000 miles. I’ve had my butt chewed up one side and down the other at work for letting my work truck go past 9,000 when we were busy

On 18 Forester I change filters every 5000 and oil every 10,000.

Wix and Mobil1 r both good filters.

3 togo-had put a futomo on wife's corolla couple yrs back and put one on Forester 1st oil change when I saw that it took 0W20 too. Stuff splashes all over like water!!!! Checked on one for F150 but I think it will b a liability where that truck goes!!!

In Feb the wife got a new Mazda (2019) and I upgraded my 2 door Wrangler to a 2017. Synthetic was recommended for both and that's what I have been using. In my 2007 Ram w/5.9 Cummins I still use non-synthetic because I have never seen synthetic oil for diesels. Anybody know why?

Costco Kirkland brand has great reviews.

I run FS oil in everything I own. I'm not overly brand loyal as my oil/filter change intervals in '18 Jeep GC and '16 Ford 3.5eco are 5,000 miles. Typically Napa/Wix filters and Mobil 1, but I also buy the Kirkland Brand FS from Costco($24.99/10qt) when the mobil 1 isn't on sale.. I can't remember the company that bottles it for costco, but read, at the time, they make a good oil. I do them myself so it is too cheap not to change that often. I also figure oil is cheaper than a turbo/engine issue because of an extended interval.

I use the T6 Rotella 5w-40 full synthetic in my 2017 Duramax and my tractor.