Motorcraft FL820S vs Wix 51372 CUT OPEN
- Thread starter TheRuley
- Start date
Thanks for the C&P, I’ve ran a dozen or more of each of those filters, I don’t know your climate but I’ve had more than one of the WIX leak on me during really cold starts, like -25C. No issue with the 820.
IIRC the filtration efficiency on the WIX isn’t the best. I’ve moved on to Champ XL myself to try.
IIRC the filtration efficiency on the WIX isn’t the best. I’ve moved on to Champ XL myself to try.
What is the advantage of that?
When the valve opens briefly during a cold start or if filter becomes loaded up, the oil which is bypassed doesn't flow across the dirty side filter media and back into the engine as it would with a bypass valve located at the dome end..
Last edited:
Sounds logical and better. I wonder why they all aren't made that way then.
Cost
The Wix looks great. While it's got the classic type design (excluding bypass), without a date code I can't say it's from when Affinia owned Wix. Could be some time after M&H took over. What's interesting about the 5/1372 application, Wix/(Napa Gold) always used dome bypass. That, even while vast majority other Wix/NG application were using thread/base end bypass. Always wondered why, and if it something to do with Ford/MC rights using base end.
As for base vs dome end bypass, Ford with Motorcraft has been pickier about it. That said, "I" never thought it a big deal either way, Seems Ford now may be thinking similar as some Motorcraft applications for Ford appear to be moving to dome bypass now.
Not keen of the angled pleats area and pleat spacing on the FL820S, but not uncommon in that application. As long as it didn't tear, got the job done. At a longer interval, might not have been the case.
Thanks for c&p.
As for base vs dome end bypass, Ford with Motorcraft has been pickier about it. That said, "I" never thought it a big deal either way, Seems Ford now may be thinking similar as some Motorcraft applications for Ford appear to be moving to dome bypass now.
Not keen of the angled pleats area and pleat spacing on the FL820S, but not uncommon in that application. As long as it didn't tear, got the job done. At a longer interval, might not have been the case.
Thanks for c&p.
- Joined
- Feb 3, 2024
- Messages
- 1
Of the last 4 FL 820's I changed and cut, 2 had the pleats mis-spaced in the epoxy so there was side pressure on them and one tore the end loose causing a bypass. In the 3rd one the epoxy in the top end had completely came unglued from the steel end cap causing a bypass. Don't believe I'll be buying any more Motorjunk.
The 820 has been one of Motorcrafts problem children for a while. This one is okay, but sure doesn’t inspire me to use one.
I would like to use the Motorcraft FL2121 the Ecore designed one. If Amazon ever gets them. Champ labs may not even be producing them anymore for M&H.
Did I see a tear in the Wix filter near the top on the 6:00 photo?
Did you try out a MicroGard Select on your 'Stang? ... or have one to try?
