AC Delco UPF63R instead of FL-500S?

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Aug 5, 2019
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57
Location
Granville, Mass
I have been using the FL-500s on my 3.5L NA 2017 Ford Explorer for some time. Vehicle has 45,000 miles and well maintained by me. Recent cuts of the FL500s filter shown on this site got me concerned and I may not use them anymore. Plus, they’ve got kinda expensive. I bought a couple cases of the UPF63R filters from Amazon for my 3.6 Blazer and maybe my 5.3 Silverado. Essentially the same size filter as the FL500, and thread, so it will fit the Explorer. Will the higher bypass valve psi setting be an issue? Searching this topic, I don’t think so, but wonder what the filter experts think. Temperature in the Northeast gets down to 0, and I run 30 grade year round. Vehicle does get a short warm up when very cold, but I can’t say it is driven easy, (wife’s car). Thank you in advance for any advice on the bypass pressure.
 
Web says the delco is 22 psi and the fl500 is 1 6psi. It's not a big deal pressure wise if that's the case. Many use a fram 10575 on their engines without issue and they say their filters are 16-28 psi. If these engines were picky about bypass pressure I think we'd've heard about it by now. The relief valve in the pump can always dump excess pressure. Don't think it's an issue in the cold if you use thin oil. I take it the NA 3.5 takes 5w-20? If so I'd use m1 esp x2 0w-20 or castrol edge ep 0w-20
 
Plus, they’ve got kinda expensive. I bought a couple cases of the UPF63R filters from Amazon for my 3.6 Blazer and maybe my 5.3 Silverado. Essentially the same size filter as the FL500, and thread, so it will fit the Explorer.
What's the AC Delco filter model for the Explorer and the bypass setting for that AC Delco?

The FL500S bypass is 17 PSI, so if the AC Delco is 22 PSI I wouldn't worry about it ... not that much different. Better to have a bypass valve set a few more PSI more than less. Besides, the filter bypass valve setting is also dependent on the filter itself. That's why you can look at 10 different oil filters all specified for the same engine and they will not all have the same bypass valve setting.
 
What's the AC Delco filter model for the Explorer and the bypass setting for that AC Delco?

The FL500S bypass is 17 PSI, so if the AC Delco is 22 PSI I wouldn't worry about it ... not that much different. Better to have a bypass valve set a few more PSI more than less. Besides, the filter bypass valve setting is also dependent on the filter itself. That's why you can look at 10 different oil filters all specified for the same engine and they will not all have the same bypass valve setting.
What's the AC Delco filter model for the Explorer and the bypass setting for that AC Delco?

The FL500S bypass is 17 PSI, so if the AC Delco is 22 PSI I wouldn't worry about it ... not that much different. Better to have a bypass valve set a few more PSI more than less. Besides, the filter bypass valve setting is also dependent on the filter itself. That's why you can look at 10 different oil filters all specified for the same engine and they will not all have the same bypass valve setting.
Thank you for the reply. My google search and old posts here is showing the FL-500s at 8 psi. If the AC Delco is 22, that’s quite a difference. Researching here, I agree, more is better. Thank you for the confirmation as well.
 
Web says the delco is 22 psi and the fl500 is 1 6psi. It's not a big deal pressure wise if that's the case. Many use a fram 10575 on their engines without issue and they say their filters are 16-28 psi. If these engines were picky about bypass pressure I think we'd've heard about it by now. The relief valve in the pump can always dump excess pressure. Don't think it's an issue in the cold if you use thin oil. I take it the NA 3.5 takes 5w-20? If so I'd use m1 esp x2 0w-20 or castrol edge ep 0w-20
Thank you. Yeah, I saw that on the Fram specs. Yes 20 grade is the recommendation, turbo version it’s 30. I been using the 30 grade hoping it may protect a bit more if fuel is in the mix, or perhaps extra chain love
 
Thank you for the reply. My google search and old posts here is showing the FL-500s at 8 psi. If the AC Delco is 22, that’s quite a difference. Researching here, I agree, more is better. Thank you for the confirmation as well.
The Google search is wrong - that's old information. Here's a thread showing the Product Engineering Manager at Purolator says that Motorcraft upped the FL500S bypass to 17 PSI.

The Product Manager said:
"The FL500S filter design is not an 8 psi relief valve – Ford increased their target valve opening pressure several years ago to a higher range in the 17 + psi targets."

 
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