Can Valvoline Restore and Protect help this Hyundai 1.6GDI Gamma II engine?

I've been servicing a friends Hyundai Accent for a little while now, and it hasnt had the best service history - in fact it barely had a service history in its first 80,000km. So fortantly for us now it creates a great test bed for us to use Valvoline Restore and Protect 10W40.
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