I do believe molybdenum plays a part in engine quietness and smoothness, but I am no tribologist.
OP, for your consideration, the Valvoline Extended Protection virgin oil analysis shows decently higher additives in almost every area over Restore and Protect. Iām not sure what Iām missing here, but in the VOA database on this forum, the EP shows double the moly versus the R&P and slightly higher in most other good elements.
I considered the R&P but realized the Valvoline Advanced and EP were nearly the same or appeared to have more of what we consider āgoodā stuff in VOAs.
Might be worth trying the Advanced or EP in your vehicles if itās more accessible in Canada than the R&P. I think I recall that R&P is a rebrand of what was Advanced for quite some timeā¦
Anyone feel free to correct me if Iām off in any of this!