Motorcraft FL500S Cut & Post

ZeeOSix

$100 site donor 2022
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This was off my 2015 Mustang GT, 5.0L V8 Coyote. Mileage was only ~2500 miles and ~2 years on the filter. This is a pleasure car that doesn't get driven over the winter months so doen't get many miles since I also have a truck (main driver) and two motorcycles that get ridden a lot in the summer. Every time it's driven the oil is at full operating temperature for at least 30-50 miles to ensure any water and fuel gets burned off.

Date code is "020921" which is Feb 09, 2021. Bought this filter a few years before installing it in 2023. Black dot on the can is my Sharpie mark to gauge the turn amount after the filter makes initial contact with the filter seat. I go for 3/4 to 7/8 turn.
1767393641530.webp


No crud in the bottom of the can, and this filter sits at a 45 deg angle with the dome down. The black marks are not debris, but maybe from the leaf spring contact. Oil was Valvoline Advanced Full Synthetic 5w30. New oil was Valvoline Extended Protection 5W-30. Ford "recommends" 5W-20, but I like HTHS headroom, lol. And Ford actually bumped up the "recommended" viscosity to 5W-30 not to recently on the Coyote.
1767393796091.webp


Center tube louver shot. Of course I did inspect them before buying this filter. I had to go through all of them on the shelf to find a couple of good ones at the time of purchase. I gave up on Motorcraft now, mainly for the crap glue that comes off, which I show later in this thread. And no more louvers to inspect.
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The infamous black potting material/glue. Keep in mind this filter was made in Feb 2021, so it's actually been going on for many years now.
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These two pieces of black glue where found in the pleats. I just put them on the end cap for this photo. There were also about 5 other very small pieces of glue down inside the pleats. Luckily, there was no sloppy glue on the base end cap where the bypass valve is, only on the dome end cap, so the glue that came off didn't seem to migrate towards the base bypass valve. Some Motorcrafts posted here have lots of glue on the base end cap right next to the bypass valve, and that's a major risk of this getting swept into the engine whenever the bypass valve opens. I would not be happy if this glue got into the oiling system and messed something up ... therefore the decision to stop using Motorcraft oil filters.
1767394384471.webp


The two large pieces of glue dislodged during use.
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Base end cap with bypass valve ... no sloppy glue job there.
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1767394813835.webp


Media area measurement and calculation to follow in another post.
 
Seam was glued, and I verified it was totally glued on the whole pleat width by trying to separate it (shown gap). Total pleat count was 58 including the seam. But since it was totally glued, then there were 57 pleats filtering oil.
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The easiest way to get the total media area is to measure the pleat length and depth, along with total number of pleats.
The pleats were only 3/8" (0.375") deep and 2.75" long. Just use a thin mechanic's scale similar to the one shown. Much easier and cleaner than cutting the oily media out and stretching it out somewhere.

Total media area is therefore: (2 x 2.75" x 0.375") x 57 pleats = 117.5 square inches.
Not too bad, but the Motorcraft filters I've used and cut open before had over 200 square inches of media.
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Great write up & I'm sure you'll go to Vietnam next?
Yes, forgot to mention I used a MicroGard Select on this oil change along with the Valvoline Extended Protection 5W-30. Also have some Carquest Premiums on deck for future OCIs.

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Air gap (silicon gasket can be seen) with the filter at 7/8 turn after gasket contact. Filter mount is an oil to coolant heat exchanger.
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I used MC 910 filters for many years, but last year I started seeing pieces of black glue in my oil change pan. After that I was done and switched to the Fram Ultra. I could no reason why glue couldn't circulate into my oil pickup tube.
 
Check out this motorcraft filter. They just don't seem to care these days..... so sad.


The end caps on mine were stuck well. If you look at photo 3 in post 1, the black glue seal around the center tube circumference still looks fully intact, so doesn't look like any glue on the inside shed off.

Mine had pretty minor glue issues compared to some Motorcrafts made well after mine, but they shouldn't be shedding anything from the inside or outside. Glad I didn't buy more than I did back in 2021 and this one will be last Motorcraft I'll ever use.
 
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The FL500S that was on my 23 F150 3.5 when I got it this summer had quite a bit of excess glue adhered to the filter media at the base and top plate, there was also a decent amount on the metal base plate as well. I didn't get any pictures, wished I would have. I also don't know the date on the filter. But it was installed in June 2025 during the dealers used car inspection, I bought it used July 3rd and removed it 300-ish miles later less than a week after owning it just because of threads like this. I'm also using a MicoGard Select, but with Valvoline Restore and Protect 5w30.

I'm wondering if there has been any issues attributed to excess glue dislodging and ending up somewhere in the engine where it's not supposed to be?
 
The FL500S that was on my 23 F150 3.5 when I got it this summer had quite a bit of excess glue adhered to the filter media at the base and top plate, there was also a decent amount on the metal base plate as well. I didn't get any pictures, wished I would have. I also don't know the date on the filter. But it was installed in June 2025 during the dealers used car inspection, I bought it used July 3rd and removed it 300-ish miles later less than a week after owning it just because of threads like this. I'm also using a MicoGard Select, but with 5w30 Valvoline Restore and Protect.

I'm wondering if there has been any issues attributed to excess glue dislodging and ending up somewhere in the engine where it's not supposed to be?
Yes. Several vids of glue coming out of the drain plug. Also some pics around here showing the glue on the clean side of the filter and bypass valve.
 
Yeah, excess potting, no bueno. Otherwise not too bad, but no getting past the potting.

Thanks for c&p.
 
I'm wondering if there has been any issues attributed to excess glue dislodging and ending up somewhere in the engine where it's not supposed to be?
Here's a video from Motorcraft that says stuff comming off the oil filter, or torn media may cause issues with the VCT system. How ironic that Motorcraft is saying this when their filters shed junky black potting material/glue in use. The video jumps to the part talking about debris getting into the VCT system, like getting in the valve body or clogging the oil screens. Note the filter they show has torn media and you can see the holes in the center tube through the tear, lol.

 
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This was off my 2015 Mustang GT, 5.0L V8 Coyote. Mileage was only ~2500 miles and ~2 years on the filter. This is a pleasure car that doesn't get driven over the winter months so doen't get many miles since I also have a truck (main driver) and two motorcycles that get ridden a lot in the summer. Every time it's driven the oil is at full operating temperature for at least 30-50 miles to ensure any water and fuel gets burned off.

Date code is "020921" which is Feb 09, 2021. Bought this filter a few years before installing it in 2023. Black dot on the can is my Sharpie mark to gauge the turn amount after the filter makes initial contact with the filter seat. I go for 3/4 to 7/8 turn.
View attachment 317994

No crud in the bottom of the can, and this filter sits at a 45 deg angle with the dome down. The black marks are not debris, but maybe from the leaf spring contact. Oil was Valvoline Advanced Full Synthetic 5w30. New oil was Valvoline Extended Protection 5W-30. Ford "recommends" 5W-20, but I like HTHS headroom, lol. And Ford actually bumped up the "recommended" viscosity to 5W-30 not to recently on the Coyote.
View attachment 317995

Center tube louver shot. Of course I did inspect them before buying this filter. I had to go through all of them on the shelf to find a couple of good ones at the time of purchase. I gave up on Motorcraft now, mainly for the crap glue that comes off, which I show later in this thread. And no more louvers to inspect.
View attachment 317997

The infamous black potting material/glue. Keep in mind this filter was made in Feb 2021, so it's actually been going on for many years now.
View attachment 317998

These two pieces of black glue where found in the pleats. I just put them on the end cap for this photo. There were also about 5 other very small pieces of glue down inside the pleats. Luckily, there was no sloppy glue on the base end cap where the bypass valve is, only on the dome end cap, so the glue that came off didn't seem to migrate towards the base bypass valve. Some Motorcrafts posted here have lots of glue on the base end cap right next to the bypass valve, and that's a major risk of this getting swept into the engine whenever the bypass valve opens. I would not be happy if this glue got into the oiling system and messed something up ... therefore the decision to stop using Motorcraft oil filters.
View attachment 317999

The two large pieces of glue dislodged during use.
View attachment 318001

Base end cap with bypass valve ... no sloppy glue job there.
View attachment 318002

View attachment 318003

Media area measurement and calculation to follow in another post.
Good choice on new filter you used. Nice photos sir
 
Here's a video from Motorcraft that says stuff comming off the oil filter, or torn media may cause issues with the VCT system. How ironic that Motorcraft is saying this when their filters shed junky black potting material/glue in use. The video jumps to the part talking about debris getting into the VCT system, like getting in the valve body or clogging the oil screens. Note the filter they show has torn media and you can see the holes in the center tube through the tear, lol.


That's pretty ironic, especially in a "tech tips" style video. haha

To be honest, before joining this forum nearly 6 years ago, I trusted OE oil filters were best thinking the manufacture wouldn't essentially self sabotage themselves, I thought all aftermarket filters were inferior to OE and I thought there wasn't much difference between all synthetic oils except price. That was even after being an auto tech for about 10 years at the time. I just knew through experience with common issues that were usually on vehicles with extended or neglected oil changes typically translated into more issues with components that are oil sensitive. So I just stuck with 5k OCI's with whatever synthetic oil was on sale and OE filters. I know that would likely suffice, but now I know better. Ironically, I found this forum through TacomaWorld Forums which is probably one of the least oil sensitive vehicles out there.
 
Add to that the new higher cost of the filter and moving the bypass valve from the base to the dome on the newer filters are the reasons I stopped buying them.
 
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