Looking for a New Oil Filter

Carlostrece said:
What are louvers in an oil filter?
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Capture+_2025-01-19-16-44-40-1.webp
 
Fair enough said:
Using what has worked well is a good choice. Baldwin is fine, the adbv may be a nitrile, but made by Parker. Baldwin owns Parker or the other way around. They know what they are doing. China and Vietnam are opposed to our democracy, openly so. For your car with bypass in the block, any of the USA made filters should work fine.
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I agree about China as an enemy, but Vietnam has come around some since the bad old days of ‘74 & earlier-I’m not even sure they’re considered a true communist country anymore, they’re somewhat a US ally. Unfortunately PG makes filters in both countries…
 
I have learned that VAFI (Vietnam Advanced Filtration Inc) (or AFI for short) is a Vietnamese company (that makes Premium Guard, Valvoline, and a bunch of autostores housebrand filters). VAFI has manufacturing factories in Vietnam & China.

Link to VAFI

I've got no beef with Vietnam. The Vietnam/USA undeclared war was a long time ago. The Vietnamese want to repair relations with USA. In the years after the Vietnam/USA war, China invaded Vietnam and there was a Vietnam/China undeclared war that lasted several years. The Chinese could not defeat Vietnam and eventually the Chinese gave up and went home. The Vietnamese have been invaded by Mongols, France, Japan, USA, Russia, and China. Vietnam is the only nation on earth that's been invaded by multiple superpowers over last 600 years and never been defeated in the longterm by anyone. That's worthy of respect, IMO.

Vietnam's undeclared war with China (which Vietnam won) is more recent than the war between V & USA. The Vietnames civilians and gov like and trust the USA a lot more than China.

Due to politics & economics, Vietnam is now a competitor to China and is trying to become a friend to USA. It's likely that eventually VAFI will make all its filters in Vietnam and none in China because Viet/Chinese relations are souring again as Viet becomes closer to USA. Part of that is Vietnam knows China wants to take over Asia and knows the USA cab be a powerful trading partner and that the USA might become a military ally to help them resist China.

Vietnam has become a USA trading partner and is migrating towards being an ally against China. The Vietnamese have no bad intentions towards USA and haven't for decades. China on the other hand, is a growing enemy of Vietnam, South Korea, Asia in general, and of the USA.

===

Pentius appears to me to be a USA & South Korean venture. http://pentiusautoparts.com/about/
 
P.S. - China has been behaving as an enemy since we began treating them as an enemy around 2016-2019. Trump & Biden both antagonized China needlessly. Pelosi infuriated China needlessly. So our currently terrible relationship with China is partly our own government's fault, and partly China's fault too.

War isn't profitable for anyone. Peace and fair trade is best for everyone, but try telling that to politicians.
 
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Before looking for any new filters I need to figure which existing to use next. Full synthetic like Old Ultra and Boss can continue to wait and the fibers won’t deteriorate. The Red Puro I just got probably should go next.
If I ever get to the end of the filters I have then I can “look for a new filter.”
 
Fair enough said:
Before looking for any new filters I need to figure which existing to use next. Full synthetic like Old Ultra and Boss can continue to wait and the fibers won’t deteriorate. The Red Puro I just got probably should go next.
If I ever get to the end of the filters I have then I can “look for a new filter.”
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I don't like to order too far ahead and store things because things can get lost, stolen, or deteriorate in storage, or something new and better might come out.
 
Hey, @Carlostrece did you ever decide on a filter? Your Buick can use a Fram XG3980 (long). There is a seller on eBay "sae-auto" that has the old school XG, & they have that size. The "leaf spring" (I think its more of a bracket) seals to the filter housing with a fiber gasket, so no leakage. They eliminated the gasket in later "upgrades" (cheapening). That model does not have a bypass valve because GM has a bypass valve built into the filter base. This media is what Ascent testing tested in the graphs @ZeeOSix posted earlier in this thread.
 
ZeeOSix said:
It's called a leaf spring in the industry because it does have some "spring action" to hold the guts of the filter tight when assembled. Spin-on filters use either a leaf spring or a coil spring in the dome end to hold the guts tight.

View attachment 292284
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I concede, you are correct, sir, it does perform the job of applying pressure to the filter element keeping it seated on the adbv at the base. "Leaf spring" implies that it acts as the relief valve by allowing the element to unseat & allow oil to bypass, but it does not perform that function, it in fact applies pressure the same direction as oil flow. I think leaf spring (there, I said it) design is better because it acts as a bracket centering the element on its base as well as applying force. It also spreads the force more evenly across the dome end. A coil spring would apply all that force to a small area in the middle of the dome.
 
garageman402 said:
I concede, you are correct, sir, it does perform the job of applying pressure to the filter element keeping it seated on the adbv at the base. "Leaf spring" implies that it acts as the relief valve by allowing the element to unseat & allow oil to bypass, but it does not perform that function, it in fact applies pressure the same direction as oil flow.
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No, the leaf spring has no function related to any kind of "relief valve". It's only function is to keep a constant pressure on the end cap to keep the guts of the filter tight. It's not suppose to let anything move around.

It's called a "leaf spring" because of it's shape and the way force is transferred from the two cantilevered "ears" in contact with the dome of the can to the end cap. Like the way force is transferred in a leaf spring in the rear suspension of a car or truck. In that case, the force points are the two cantilevered ears of the leaf spring and the axle between the ears. Same basic force diagram between a leaf spring and the end cap in an oil filter. But a leaf spring in the filter is super stiff, so it's not going to "spring" around once assembled from any forces seen inside the filter under use conditions.

garageman402 said:
I think leaf spring (there, I said it) design is better because it acts as a bracket centering the element on its base as well as applying force. It also spreads the force more evenly across the dome end. A coil spring would apply all that force to a small area in the middle of the dome.
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I think they both work as intended, but with a leaf spring it's possible that if the filter is dropped or impacted in the wrong way the leaf spring can get deformed and loose it's force on the end cap, and can cause the guts of the filter to become loose. We have seen some instances of that. With a coil spring, that wouldn't happen. If the coil spring is done right, it will stay centered on the dome end of the filter, and the end cap end is typically sitting in a recess so it can't move side-to-side.
 
garageman402 said:
Hey, @Carlostrece did you ever decide on a filter? Your Buick can use a Fram XG3980 (long). There is a seller on eBay "sae-auto" that has the old school XG, & they have that size. The "leaf spring" (I think its more of a bracket) seals to the filter housing with a fiber gasket, so no leakage. They eliminated the gasket in later "upgrades" (cheapening). That model does not have a bypass valve because GM has a bypass valve built into the filter base. This media is what Ascent testing tested in the graphs @ZeeOSix posted earlier in this thread.
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Yes I decided on NAPA Gold 1036.

I'm currently using my 2nd choice, which is Oreilly Microgard Select MSL51036 (which is much longer than stock filter).

At next OCI, I'll switch to my preference, which is NAPA Gold 1036 (which is much longer than stock).

The Microgard Select filter is very good. The NAPA Gold is slightly better. At least according to a filter dissection video I watched. I'm aware that both filters are made by Premium Guard in Vietnam, but there are some differences between the two filters.

I think the NAPA costs $1 more than Micfogard Select. Also, longer filter costs $1 more than standard length filter.
 
ZeeOSix said:
No, the leaf spring has no function related to any kind of "relief valve". It's only function is to keep a constant pressure on the end cap to keep the guts of the filter tight. It's not suppose to let anything move around.
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You only highlighted half my sentence, I was only suggesting that the term may imply that. The second half of the sentence I was agreeing that is not the case.

One could argue that it is merely a bracket that when assembled forces the media endcap into the ADBV on the baseplate to provide & maintain the force. Not through spring pressure, but gasket compression (the ABDV being the gasket in this case).
ZeeOSix said:
I think they both work as intended, but with a leaf spring it's possible that if the filter is dropped or impacted in the wrong way the leaf spring can get deformed and loose it's force on the end cap, and can cause the guts of the filter to become loose. We have seen some instances of that. With a coil spring, that wouldn't happen. If the coil spring is done right, it will stay centered on the dome end of the filter, and the end cap end is typically sitting in a recess so it can't move side-to-side.
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If the end cap is sitting in a recess, the oil would not flow to the dome very well & bypass valve would have to be at the base end. I'd prefer the bypass to be at the base, or better yet in the filter housing as most GM applications are. Dome end bypass can allow sloughed off debris & debris sitting in the dome to be washed into the clean side.
 
Carlostrece said:
Yes I decided on NAPA Gold 1036.

I'm currently using my 2nd choice, which is Oreilly Microgard Select MSL51036 (which is much longer than stock filter).

At next OCI, I'll switch to my preference, which is NAPA Gold 1036 (which is much longer than stock).

The Microgard Select filter is very good. The NAPA Gold is slightly better. At least according to a filter dissection video I watched. I'm aware that both filters are made by Premium Guard in Vietnam, but there are some differences between the two filters.

I think the NAPA costs $1 more than Micfogard Select. Also, longer filter costs $1 more than standard length filter.
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No intention of getting the OG Ultra Synthetic from that eBay seller?
 
garageman402 said:
You only highlighted half my sentence, I was only suggesting that the term may imply that. The second half of the sentence I was agreeing that is not the case.
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I was only pointing out the part I bolded. Regardless how someone might interpret the term "leaf spring". the fact is the leaf spring's only function is to always keep the guts of the filter tight, and help keep the cartridge inside the can centered on the dome end as you mentioned. Part of learning specific jargon and use of words is the definition and meaning of them in a specific context.

garageman402 said:
One could argue that it is merely a bracket that when assembled forces the media endcap into the ADBV on the baseplate to provide & maintain the force. Not through spring pressure, but gasket compression (the ABDV being the gasket in this case).
Click to expand...
The leaf spring flexes some to create a constant force on the filter end cap. If it didn't flex some, the build-up tolerances of all the parts would have to be very exact to make things tight without some flexing involved - ie, "spring action". If a filter gets dropped wrong, and the leaf spring deforms form the impact, then that spring force is lost and the guts become loose and can rattle around inside the can. I've seen this in person before, and shaking the can you can hear everything is loose inside.

garageman402 said:
If the end cap is sitting in a recess, the oil would not flow to the dome very well & bypass valve would have to be at the base end. I'd prefer the bypass to be at the base, or better yet in the filter housing as most GM applications are. Dome end bypass can allow sloughed off debris & debris sitting in the dome to be washed into the clean side.
Click to expand...
I think you misread my post you're commenting on here. I said there's recess in the end cap for the coil spring to sit into so the coil spring doesn't move around. The end cap itself isn't "sitting in a recess". This causes no problem for the oil to get to the dome area of the filter and the bypass valve built into the end cap. Just look at some of the C&P photos and you can see what I'm describing.
 
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garageman402 said:
Hey, @Carlostrece did you ever decide on a filter? Your Buick can use a Fram XG3980 (long). There is a seller on eBay "sae-auto" that has the old school XG, & they have that size. The "leaf spring" (I think its more of a bracket) seals to the filter housing with a fiber gasket, so no leakage. They eliminated the gasket in later "upgrades" (cheapening). That model does not have a bypass valve because GM has a bypass valve built into the filter base. This media is what Ascent testing tested in the graphs @ZeeOSix posted earlier in this thread.
Click to expand...
Earlier today I was on a long distance mobility scooter ride halfway across town to a restaurant, then pharmacy, then home. Round trip 3.5 miles. It was 90F on the way home too. It was a fun, but grueling 3 hrs trip for a guy not in good health. When I got home I washed up and then took a 3 hr nap!

While at the restaurant waiting for my food earlier today, I read and answered your post.
That was my post where I said, I already found a good quality, widely available, long filter that I like: NAPA Gold 1036.

Now that I'm home and rested up, I will look into the details of what you posted. It sounds interesting. Thanks!
 
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