Originally Posted By: MisterVTRH
The Champ labs filters have been easy to spot... AA's house brand "Total Grip" was one of my favs for a long time. I needed the big Ford filter... for a Crown Vic. The Wally World filter was the same one for a long time.. then one day it WASN'T. It got a half inch shorter, and the inside of the filter was poorly braced. That wasn't the Champ Labs I remembered. Went back and got some more AA's and they were the ones I remembered. When in doubt, hold it up to the light and look inside... you can recognize most major makers.
To my knowledge, the Total Grip filter was always manufactured by Purolator.
The SuperTech that came from WM was a transition from standard construction to ecore construction.