Late last year, I discovered the PH7317 had become an E-core with a non-silicone (black) ADBV. I liked the change and welcomed the nylon cage core. Before long, the silicone ADBV came back and I noticed that all the Fram filters (Extra Guard, Tough Guard, Ultra and Endurance) had adopted the E-core design. I was glad to see the silicone come back and was really indifferent to the change in the more expensive models, since all I bought was the Extra Guard and got the nylon cage I wanted and didn't spend much money. Mind you, the Supertech 7317 was discontinued, so I couldn't get that as an even cheaper option and I'm not interested in running the shorty 6607.
Fast forward to now, I have discovered that Fram has switched to a louvered metal core on the Extra Guard. This is a huge disappointment! Not to mention, the ones I'm seeing seem to have very poorly formed openings. I then looked at Tough Guard, Ultra and Endurance and they all have gone to the louvered core. I went to a different, less busy Walmart and luckily found the Ultra and Endurance there had some older stock with the nylon cores. But, I don't like having to spend $10-$12 range just to get what used to be the cheapest design - an E-core.
I've been buying Fram filters for 31 years and while I knew they may not be the ideal filter for filtering purposes, I never had worries about flow and we all know good flow is more imporant than ultimate filtering ability. Now today, I'm going to have to find another option, but sadly it'll likely have to be something online. I can't just stroll into a local Walmart and get a filter any more.
To second what user parshisa said in an earlier post, I wouldn't be surprised if Fram was putting the same media in all these filters. If they put nitrile ADBV on these filters for awhile last year, you can tell this company doesn't care about living up to what they state on the packaging. When all models had the E-core at the same time, I was looking at each and they all had the same looking media and I was shining my smartphone flashlight into them to try and get a good look. They didn't look different at all. Can you imagine spending $12 for an Endurance, just to be getting an Extra Guard painted dark blue? The new louvered core makes it even easier to pull this off, since you can't see the media through those little slits and the typical consumer isn't going to cut open a new filter to check.
I also wonder if we have seen the last of the nylon cage. With the recent changes, has Fram decided the louvered core will be the de facto standard going forward for all filters they produce, from any brand? I wish I could find an E-core 7317 that I could order online for cheap and be sure I would receive something without a poorly formed louvered core.