I have three different brands of the cartridge for the Speed3 and I swear I cannot see a dimes worth of difference among them. My guess is that these were all made in the same plant.
Originally Posted By: Eddie
My CX7 uses a MC filter cartridge. Appears to be excellent quality. I buy them at WalMart for ~ $5.45
The MC cartridge is what I use in the Fusion which is the same as the Mazda cartridge. Also if anyone needs the cap wrench for the filter, O'Reilly's can get them for less than $10.
I've used MC, Mazda, Purolator, Fram cartridges on my Mazda 3. They ALL worked well.
I'd say used whatever one you want. Right now I'm running a purolator classic with 4.5 quarts of AAP full synthetic 5w20 for its winter fill. Smooth as silk.