Hello everyone, I'm a new member, and have been lurking from time to time regarding oil and oil filter selection. I decided to join, and create this post since I've been recently doing some oil changes and have noticed some things that we're alarming. The first was when I changed the oil on my mother's Accord I immediately noticed the oil filter was smaller than the newer one Napa Pro Select, see attached. The smaller blue Mobil filter is from a local quick lube/car wash place. I also noticed my cousin who's truck uses the same exact filter had this smaller filter on it as well. My cousin said he wanted to continue to use the quick lube place, put provide me the oil filter, so he asked me what to get. I though the Napa or Carquest was a good choice, and left it at that. Now what really has me concerned is the oil filter rebadge game. I, for the longest time though Napa Gold and Carquest Premium (Blue) was rebranded Wix oil filers which has always gotten good reviews. I work at smaller alternative high school for students with emotional/behavioral problems, and one thing I've been trying to do is infuse 'vocational skills' to some of my students. I have been doing a small engine class, and now I'm shifting gears to basic car maintenance (locating items, changing flats, tire depth, tire pressure) and now oil changes. Luckily for me a lot of my co-workers don't take immaculate care of their cars, and gladly let the kids work on them with my incredibly close supervision. It's more like I do most of the work, while my students observe. I haven't been overly concerned with the type of oil, I've been using the cheapest name brand dino I can get in the correct weight from Amazon (Usually Chevron Havoline or Supreme). What has gotten me concerned is the oil filters. I didn't realize Advance Auto Parts sold Carquest until last time I was there getting something else. After researching this topic, it seems as though Mann Hummel has owned or provided rebranding for Napa, Carquest, Purolator and Wix. I did an oil change this past week for a coworker and used a Napa Select oil filter which was clearly labelled Mann Hummel. Even going on the Wix and Purolator website it says Mann Hummel right on it. Looking at the filter lineups it looks like: Wix XP = Purolator BOSS = Napa Platinum Wix black = Purolator Pure One = Napa Gold = Carquest Premium Wix ProTect = Purolator (Red) = Napa Silver/Pro Select = Carquest Red That's just me trying to decipher and connect each filter to it's re-branded counterpart. I didn't realize until I searched on Google and this forum that people have had problems with Purolators pleats tearing both classics and pure one, which means most of the oil filters would theoretically be in that category. I'm now rethinking what filters I should use for my personal vehicles along with my co-workers? I just ordered 5 carquest premium from AAP with their promos and I had speed perks credits. Are there other brands that Mann Hummel equivalent would fall under? What filters would you use for my 'auto tech' class? It seems like all my local auto stores have the same filters (Carquest, Napa, AAP and Autozone). Any help/corrections would be appreciated. Thanks!