Where did this come from? A quicky lube joint or something your friend just found from a dollar store, or auto parts store? I am currently working on a turn-to-sell, and it has a yellow filter on it like this, however I cannot see anything more than the bottom of the filter without taking it off. Its last oil change came from a Firestone.
correct, not Valvoline made but they have a "agreement" with Valvoline to use their part numbers and advertise them as their own. they are somewhat decent filters, boss uses them on his 600 hp 454 chevelle with no issues.
Topic filter does "appear" to be a China made jobber filter that happens to use the Valvoline numbering system. A Valvoline "labeled" oil filter was recently posted here and the construction is different than topic.
Skipper posted that these are filters used by Monro Muffler. Perhaps Munro has separately contracted with another filter manufacturer but maintained the Valvoline numbering system. The Valvoline OF anecdotes I've seen posted here, no matter the manufacturer, had/have the Valvoline name on the filter.
As for the filter causing the oil pressure fluctuation, I suppose if when this one removed and everything else the same and it stopped, filter a suspect. Just looking at pics though, I don't see anything that stands out.