Fram PH 16 vs. FRAM PH8A

[Dave Burr]

I have a 2004 Ram with 5.8 Hemi.
Book calls for PH-16
A Fram ph8a has the same size seal, and the same size thread.
The ph8a is 30% larger, and the same price.
I see no reason for not using a ph8a, and a very good reason for using one.
I have seen this same issue in Hondas and Toyotas. I suspect is is because of fit issues in certain applications.
Anyone know why a PH-8A would not be equal to or better?

 

[1999 White C5 Coupe]

I have a 2004 Ram with 5.8 Hemi.
Book calls for PH-16
A Fram ph8a has the same size seal, and the same size thread.
The ph8a is 30% larger, and the same price.
I see no reason for not using a ph8a, and a very good reason for using one.
I have seen this same issue in Hondas and Toyotas. I suspect is is because of fit issues in certain applications.
Anyone know why a PH-8A would not be equal to or better?

While I can’t answer your question on why a PH-8A would not be equal to or better than a PH-16, I can offer some observations.

Different oil filters by the same manufacturer, even those of the same size, can have different filtration pressures and rates, and bypass valve opening pressures. They can also have different burst strengths.

No matter what brand you use (please don’t ask what the best oil filter is.......), I would suggest using the one that is specified for your engine.

 

[97RedRam]

I have used the ph8a over the ph16 for many years with no problem.

 

[Green_Manalishi]

If you have room, it'll work. However, I'd recommend the WIX 51515XP.

 

[GTyankee]

I believe that i used the PH8A on my old 327 cu.in

now i only use WIX Filters, if it fits the application

 

[Dave Burr]

I dont know a lot about oil filters. I know Fram has been around forever. Why do you recommend WIX?

 

[DRam01]

Something something... volume affecting oil pressure. Read a decent technical write up about just this topic. Sticking with OE size recommended.

 

[GTyankee]

WIX Oil Filters have been a Top Brand in most Testing done

Even Stellantis which is Dodge is using WIX filters, they use them on certain vehicles, then they pack them in their own boxes.

right up until 2024 ...

• Wix as OEM Supplier:
  Wix Filters is a well-known filter manufacturer and is also an Original Equipment Manufacturer (OEM) supplier, meaning they provide parts directly to vehicle manufacturers.
  
  
• Wix and Mopar:
  It's confirmed that Wix produces the Mopar oil filters, and the dealerships utilize Mopar-branded filters, as suggested in a Jeep Gladiator forum,.
  https://www.google.com/search?rlz=1...3ilKvMSfkn2w1gAAyXuD5j2Isgn72DQVwsHxn4&csui=3