Looking to find the highest quality oil within reason considering price. I have a 2021 Subaru Ascent with the FA24F direct injection 2.4L turbo. I want to keep this vehicle in great shape as we tend to keep our vehicles 10+ years. I live in Iowa so we experience -20F to 100F temps. We typically drive about 10k-12k a yr so I generally have done 5K OCI’s and will stick with that. I use Subaru oil filters from the dealer as well to ensure it is not a fake. The manual calls for ISLAC GF-6 0w20, which seems to be the most specific requirement among the other listings. What I am most concerned with is carbon build up, extreme and heat resistance regarding the turbo. The oils I am considering are based on research done mostly here.
Idemitsu 0w20
TMGO 0w20 (Toyota, though I haven’t seen GF-6 on the label)
Penzoil Platinum or Ultra Platinum 0w20
Schaffer’s 9000 0w20
Valvoline Modern Engine 0w20
So far these have been on the top of my list, if you have other suggestions I’m all ears. Question is, if it was your vehicle what would run??
Idemitsu 0w20
TMGO 0w20 (Toyota, though I haven’t seen GF-6 on the label)
Penzoil Platinum or Ultra Platinum 0w20
Schaffer’s 9000 0w20
Valvoline Modern Engine 0w20
So far these have been on the top of my list, if you have other suggestions I’m all ears. Question is, if it was your vehicle what would run??