I usually get my oil changed at TiresPlus (owned by Firestone). They use STP oil filters. Are these good, bad? Where do they fit in? I plan on doing an AutoRX treatment when I get my oil changed, and want a good filter. They said I can bring my own filter and oil if I want. I have done research here and will go with a Wix or NAPA gold if the STP is not very good.