Best oil filters to help with oil pressure?

[j91z28d1]

I thought the Fram Ultra was recommended by all. That’s what I’ve been running lately on both my 02 and 08 and both have great oil pressure.

Yes. the filter nerds over on Bob the pop guy forum loved the fram for price vs filter quality.

times change. so it's hard to keep up. they worry about the price. if you don't worry about price much amsoil is good.

 

[donjetman]

View attachment 453274

Micro rating without efficiency is worthless.
If folks here want to know about oil and/or filters spend a lot of time at BobIsTheOilGuy forum.
Example: Wix is 50% efficient at 20 microns.

 

[homesick]

Micro rating without efficiency is worthless... Example: Wix is 50% efficient at 20 microns.

Elaborate, please.

It seems like you're saying that 1/2 of the Wix's perforations are larger than the stated 20 microns.

joe

 

[j91z28d1]

Elaborate, please.

joe

it took me a while to find the answers.

there's 2 efficiency rating no one shows. flow efficiency is its resistant to oil flow thru the filter, usually measured in pressure drop across the inlet and outlet. but that tells you basically nothing alone, the 2nd efficiency rating, is how many particles of a given size make it thru the filter media. so if wix is 50% efficient at 20 micron it means it only catches half of the particles in that size that flow thru it. so it's easy to flow well if you don't filter anything out and it's easy to filter everything well but have a big pressure drop across it. the magic is pulling off both.

you also gotta throw in a bit of an unknown of your engine oil flow rate at what rpm and when the filter goes into bypass mode and doesn't filter anything. somewhere along the line gm in the newer lt engines decided they needed to up the bypass pressure from something like 10-12psi to 20something. techs and parts guys didn't know or care and kept using the lower pressure rated filters because they looked the same even thou it was a different part number. they had to release a internal TSB about the issue. I can only guess they found the wrong filter was being used by researching warranty claims. but if that helps our trucks at all, I have no idea. maybe if you run higher rpm on a older loose freer flowing engine, it could get into bypass earlier than one with tight clearances and idles around town all day. but that's just a guess.


so like everything, it's almost impossible to get good specs and data on filters, and then the filter should match the driving conditions. if you're running laps around a race course you might have to give up some efficiency at catching small particles to keep the filter out of bypass all the time and to avoid big pressure drops

my 2 cents is a bone stock engine in good shape none of this matters. more than one ls engine has gone 300k miles plus on wix filters and cheap oil. but since the Gen 4 valve train likes to eat itself. the hope is better filtering and oil can help with that. but no one actually knows.

 

[homesick]

it took me a while to find the answers.

there's 2 efficiency rating no one shows. flow efficiency is its resistant to oil flow thru the filter, usually measured in pressure drop across the inlet and outlet. but that tells you basically nothing alone, the 2nd efficiency rating, is how many particles of a given size make it thru the filter media. so if wix is 50% efficient at 20 micron it means it only catches half of the particles in that size that flow thru it. so it's easy to flow well if you don't filter anything out and it's easy to filter everything well but have a big pressure drop across it. the magic is pulling off both.

you also gotta throw in a bit of an unknown of your engine oil flow rate at what rpm and when the filter goes into bypass mode and doesn't filter anything. somewhere along the line gm in the newer lt engines decided they needed to up the bypass pressure from something like 10-12psi to 20something. techs and parts guys didn't know or care and kept using the lower pressure rated filters because they looked the same even thou it was a different part number. they had to release a internal TSB about the issue. I can only guess they found the wrong filter was being used by researching warranty claims. but if that helps our trucks at all, I have no idea. maybe if you run higher rpm on a older loose freer flowing engine, it could get into bypass earlier than one with tight clearances and idles around town all day. but that's just a guess.


so like everything, it's almost impossible to get good specs and data on filters, and then the filter should match the driving conditions. if you're running laps around a race course you might have to give up some efficiency at catching small particles to keep the filter out of bypass all the time and to avoid big pressure drops

my 2 cents is a bone stock engine in good shape none of this matters. more than one ls engine has gone 300k miles plus on wix filters and cheap oil. but since the Gen 4 valve train likes to eat itself. the hope is better filtering and oil can help with that. but no one actually knows.

Well... thanks for taking the time.

joe

 

[j91z28d1]

Well... thanks for taking the time.

joe

the rabbit hole is deep. I just gotta keep reminding myself that over thinking the theory of everything doesn't really matter on my engines. Just change oil often. in almost 40 years of car stuff, one never lost an engine because of quality of oil or filter and I ran whatever bulk oil was free and what filter was on sale.

read everything but don't lose sleep over it.

 

[donjetman]

The International Organization for Standardization has test stardard for full flow lubricating oil filters, ISO 4548-12.
The test procedure determines the contaminant capacity of a filter, its particulate removal characteristics, and differential pressure.
Any data that doesn't come from this testing is jibberish/marketing speak IMO.
Again, BITOG forum is your friend.
https://www.iso.org/standard/62763.html
and
https://cdn.standards.iteh.ai/samples/62763/51caea884e4b43939a357cfe0fcd9c25/ISO-4548-12-2017.pdf

 

[Marky Dissod]

BITOG forum is your friend.

Despite that BobIsTheOilGuy has not gotten any easier to understand and likely never will, hell yes.