Addititive to Mirror Valvoline Premium Blue Restore

Again, there is NO OTC or Third Party product that will mirror any additive already contained in a finished lubricant.
 
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Just to be devils advocate..i think it was designed to clean carbon from rings of the Cummins ISX but was a bandaid. Cummins figured out antipolishing rings were a better solution.
I’ve heard something similar. As the population of affected ISX declines/gets fixed/customers stop asking for Warranty, the Restore lube will be phased out. Updated ISX/QSX have improved ring pack.
 
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