Does the ST 0w16 meet Toyota's specs? I remember it came and went pretty quickly at Walmart.I have 9 jugs of SuperTech 0W-16 that I got on clearance. I just wanted something a bit higher quality for this specific road trip. It’s going to be about 5,000 miles with a mix of higher speeds with a heavy load and quite a bit of idling time as well. Steep grades as well.
PS: I'd run 0w20 on that trip.