Yes, that's the most logical answer.
However, keep in mind that a fellow BITOG-er sludged his piston rings and increased his oil consumption with that same oil, even when changed every 5K miles. (thread and details below).
"Here are the oils I’ve used in detail:
500-35k miles Mobil 1 Full Synthetic 0w40
35k-100k miles Valvoline Extended Protection 5w30
100k-110k AMSOIL Signature Series 5w30
110k-130k Valvoline Restore and Protect 5w30"
Just passed 5k miles on my 4th and final oci of Valvoline Restore and Protect for a total of 20k miles. It’s been hard to keep my mouth shut but here are the details and results!!
2018 Subaru Outback that I bought new. Started burning oil right at about 60k miles. Before that it only used about a 1/4 quart in a 5k mile oci. It started using 1 quart in 5k miles and steadily increased to almost 3 quarts in 5k miles. I was adding a little over a quart every 2k miles when I started this test. I have done every service myself on this vehicle including the pcv valve on time. I’ve only used a...