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New PF48 oil filter?

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Old Mar 29, 2026 | 12:40 PM
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Default New PF48 oil filter?

I know there are tons of threads on this issue, but I'm still a bit confused. I just picked up a delco PF48 filter at Walmart.

I have seen lots of posts here saying to avoid the "e-core" PF48E. Does this one have the old metal core or did they just drop the "E" and now this new PF48 (12737086) is just the same as the PF48E?

I also see a lot of people recommending the Mobil 1 M1-113, but all they have on the shelf is the M1-113A. Is the "A" the same and should I just go with that?


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Old Mar 29, 2026 | 05:44 PM
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I thought AC 46E was for my LS2, and Mobil M1-107, I guess when I bought a bunch of oil AC filter years back, still work for me!
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Old Mar 30, 2026 | 12:28 AM
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Originally Posted by 1bdvet
I thought AC 46E was for my LS2, and Mobil M1-107, I guess when I bought a bunch of oil AC filter years back, still work for me!
I believe you are correct. I should have specified this is for an LS3. Specifically, LS376/480 crate motor.

Had to drop in an LS3 when my LS2 blew up on track last summer.
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Old Apr 5, 2026 | 05:40 AM
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I use pf48R
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Old Apr 5, 2026 | 11:38 AM
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The 113A is the newer version.Perfectly fine if you want to use a Mobil 1 filter.
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Old May 8, 2026 | 11:09 PM
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I have cut several of those PF48 filters open as well as several Mobil1 113A filters and the ac delco is garbage compared to the M1. Not saying the PF48 won’t be perfectly fine to use but the quality difference is night and day
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Old May 9, 2026 | 08:39 AM
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Originally Posted by bwill03z
I have cut several of those PF48 filters open as well as several Mobil1 113A filters and the ac delco is garbage compared to the M1. Not saying the PF48 won’t be perfectly fine to use but the quality difference is night and day
Anyone tried the Fram HP18? I used one for the first time a few weeks ago when I changed my oil. Saw a video where a guy cut one open, looked very high quality. Thing is very solid and hefty compared to the AC Delco and Mobil filters I’ve used previously.
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Old May 9, 2026 | 10:04 AM
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Originally Posted by 99Hawk262
Anyone tried the Fram HP18? I used one for the first time a few weeks ago when I changed my oil. Saw a video where a guy cut one open, looked very high quality. Thing is very solid and hefty compared to the AC Delco and Mobil filters I’ve used previously.
I haven’t used a Fram filter in anything in many years because of crap quality stuff they used to put out but you’re right the HP18 looks like a very good quality filter. I’d still use a Mobil1 113 over it but I would use a Fram HP18 if someone gave me one for sure. It may be just as good but the Mobil and Wix filters are hard to beat in quality
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Old May 9, 2026 | 10:24 AM
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I use the UPF48R that is the factory part for C6 ZR1 LS9
??? Thoughts on the WIX 57060XP ---> Part Details ???
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Old May 9, 2026 | 12:21 PM
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UPF48R is what I currently use in my annual oil changes because of its availability through my local parts store. In the past I’ve used Fram HP18, M1 113A, K&N. They’re all good.
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Old May 14, 2026 | 08:51 AM
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Wix XP filters are not very good efficiency wise. After doing some reading about oil filters on another forum the general consensus seems to be that premium guard xl are currently the best filters. They also make the house brand for a lot of places including car quest and Napa
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Old May 15, 2026 | 12:20 AM
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Better yet, get a K&N HP 1007.
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Old May 15, 2026 | 11:11 PM
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Many Wix filters are made in China now.
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