Yeah. but seems rare as hens teeth. Maybe a Kennelworth dealer might have it...
Saw @ArthurArgentum was recently discussing it on the russian oil forum
https://www.oil-club.ru/forum/topic/77967-valvoline-premium-blue-restore-gen2-10w-30/
(google translate required which is built into the chrome browser)
They mentioned the first gen restore was only distributed by Cummins sales and services locations.
The new version came out in February of this year so maybe it's not so rare anymore.
I emailed Cummins to see if 1 gallon containers (part# 898013) can be ordered and will update the thread with the contact info