Engine oil VALVOLINE or OEM Subaru

I run Valvoline blue and love it. Run it in my IDI and my 454 Burb

For the last 17 years I've run the recommended Valvoline Blue in all of my Cummins and so far the internals have been spotless when looking inside.

'03 GX470, had 240K miles when I bought it just over a year ago. Now on my 2nd oil change at 245K miles with Valvoline High Mileage 5W-30 full synthetic and Fram XG3600 filter. It's quiet and doesn't burn or leak oil.

Valvoline Advanced with black Wix filter!

Valvoline 5w-30 full synthetic for good cold starts in winter and a royal purple oil filter for good small particle filtration.

Use either IDEMITSU Rotary oil or Valvoline Racing Oil.

Valvoline seems to be the quietest oil.

Valvoline oil and an STP filter. Good price and convenient because its at Autozone.

I use Valvoline. I am at 300,000 miles on my 2015.

Well, some manufacturers do have way shorter oil change intervals than Euro manufacturers. The Subaru severe driving interval is 3000miles/6 months, and I do lots of short trips in a desert climate so I usually try to be around 3-4000 to stay on the safe side for warranty and whatnot.