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ZR1 oil filter PF64 - what are you using?

 
Old 05-11-2019, 12:17 PM
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Default ZR1 oil filter PF64 - what are you using?

Since I can’t pick up my ZR1 until next week I am doing the next best thing - reading the online owners manual cover to cover. I am reading on the forum here the recommended oil filter AC Delco PF64 GM part 12640445 has been replaced and there is an on going debate about quality of the new vs old (smaller).

What are people running for oil filters?

First couple oil oil changes are on GM. I’ll be thru the break in period by the time I get home, so it will go quickly.

Thanks.
D.
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Old 05-11-2019, 01:53 PM
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I'll stay with the recommended PF64 new part number or not.
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Old 05-11-2019, 09:11 PM
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UPF64R - ultraguard. Same architecture mostly. Just make sure the oil filter has an orange colored (silicone) anti-drain flapper valve beneath the perforated metal lid. The cheaper filters have the black (nitrile) that can shrivel with heat and not contain the oil. Of course, the slanted filter bosses are where it really makes a difference but I figure cheaper nitrile rubber ones may be indicative of cheaper all over.

Check my post on down the thread. There appears to be controversy.

Last edited by SouthernSon; 05-11-2019 at 09:58 PM.
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Old 05-11-2019, 09:15 PM
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Just bought a couple PF64s for break-in from the stealership. Lucky I do per diem work for a local shop so I get to use their account to save a few bucks.
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Old 05-11-2019, 09:23 PM
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The UPF64R has a 35 psi bypass and is what the Chevy Spark calls for

The recommended PF 64 has a 22 psi bypass. Whether or not this matters I don't know.
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Old 05-11-2019, 09:24 PM
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Lots of talk about these fine details on the forum.

D.
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Old 05-11-2019, 09:36 PM
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Originally Posted by BearZ06 View Post
The UPF64R has a 35 psi bypass and is what the Chevy Spark calls for

The recommended PF 64 has a 22 psi bypass. Whether or not this matters I don't know.
From my research (limited, I assure you) the recommended application charts show them to be interchangeable with all models. A 22psi would probably be in bypass constantly.

Here is another thread on the forum. I don't like the nitrile rubber AFBV. The upf64r is designated on some application charts for the C7Z06 but not the ZR1. Could be too new? Anyway, when I called the dealer a couple of weeks back he said UPF64R would be fine. Maybe, maybe not. I think I'll stick with the PF64 from now on until a final word comes down. Besides, I will change the oil often enough to stay pretty clean anyway.

https://www.corvetteforum.com/forums...lter-pics.html

Last edited by SouthernSon; 05-11-2019 at 09:57 PM.
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Old 05-12-2019, 09:48 AM
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Originally Posted by BearZ06 View Post
The UPF64R has a 35 psi bypass and is what the Chevy Spark calls for
And 1.5L Volt engine! My initial concern would be oil flow capacity since its designed for much smaller econobox engines rather than a performance V8.
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Old 05-12-2019, 11:03 AM
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I use the UPF64R on 1878.

Keep in mind that, typically, the number quoted for filter bypass is the pressure differential at which the bypass opens. As the filter becomes more restrictive over time, the pressure differential across the filter increases until the bypass opens.

In theory, you don't want a filter to bypass at all because when it does, some percentage of the oil does not get filtered.

This is why I change oil filters more frequently than I change the oil itself.

Filters, even the UPF64R are pretty inexpensive. I bought a batch of four of them from Rockauto.com
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Old 05-12-2019, 12:13 PM
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Originally Posted by Kracka View Post
And 1.5L Volt engine! My initial concern would be oil flow capacity since its designed for much smaller econobox engines rather than a performance V8.
As I stated above, the UPF64R is approved for the C7Z06. Hardly an econobox engine.

https://www.autozone.com/ignition-tu...94595_923159_0

Last edited by SouthernSon; 05-12-2019 at 12:16 PM.
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Old 05-12-2019, 03:30 PM
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I read that the variable displacement oil pumps on the LT series necessitated the lower bypass pressure setting, unlike the LS series oil pumps which was not variable displacement.
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Old 05-12-2019, 08:59 PM
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Originally Posted by SouthernSon View Post
As I stated above, the UPF64R is approved for the C7Z06. Hardly an econobox engine.

https://www.autozone.com/ignition-tu...94595_923159_0
AutoZone? Really? LOL
Just because it fits doesn't mean you should wear it

Last edited by Kracka; 05-12-2019 at 09:00 PM.
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Old 05-12-2019, 10:24 PM
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Originally Posted by Kracka View Post
AutoZone? Really? LOL
Just because it fits doesn't mean you should wear it
You post your source for the little econobox application and we'll all see what other applications they recommend for it. Of course, we all know you wouldn't want to do that, right? standing bye.....

Oh yeah, "Checkmate!"

Last edited by SouthernSon; 05-12-2019 at 10:29 PM.
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Old 05-12-2019, 10:52 PM
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I thought I read some where the ultras were just reboxed mobile 1 filters
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Old 05-12-2019, 11:22 PM
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The “holes” in the top of the filters are quite different.....for better or worse.

https://www.camaro6.com/forums/showthread.php?t=524554
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Old 05-12-2019, 11:26 PM
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Originally Posted by Ninetres View Post
The “holes” in the top of the filters are quite different.....for better or worse.

https://www.camaro6.com/forums/showthread.php?t=524554
Yes they are. You should see the openings in the K/N HP 1017.
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Old 05-13-2019, 08:09 PM
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Just found this and ordered it. I have used one on a 2007 duramax for 10 years and one on my C5Z also for 10 years. Never had a problem. I like being able to peek inside during oil change, too. Easy to clean and reinstall. They work great.

https://www.knfilters.com/oil-filter...-filter-billet
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Old 05-14-2019, 02:58 PM
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You guys are approaching this wrong. I have done extensive research on these filters and my conclusion was that the 22 psi bypass is a deal breaker if you are pushing the car. During high rpm heavy use, that bypass psi difference becomes matter of life and death of the engine. I read engine failures due to this in other forums. I would not risk this to be honest, not worth it.
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Old 05-14-2019, 03:21 PM
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Well, I found the specs for the K/N oil filter - 16 psi relief valve. But, the SS filtering does a superb job while maximizing flow in my experience with the C5Z track car. It would take a long time between cleanings to restrict enough for the 16psi to kick in, probably.

https://www.knfilters.ca/search/prod...x?Prod=SS-1017
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Old 05-17-2019, 10:10 AM
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Does anyone have any links to reviews of oil filters with 22 bypass for the LT5? PF 64 is factory recommended but aren’t there much better filters available with higher flow, better filtering and also fully synthetic? The more I read the more confused I get.
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