LargER L59 V8 oil filter part number

[OR VietVet]

The WIX 51522 will work but the best choice, especially for synthetic oil, is 51522XP.

 

[DRLexpress]

Just because they fit does not mean they are the same. I have not found other web sites yet that gives all the info but I see that Fram's web site does. For example, 2 Fram filters listed above, 3675 and 9837, are not the same. The 3675 has an "anti-drain back valve" and the 9837 does not. The one they call for my Tahoe, 3506 (small one), has the "anti-drain back valve" so I think the 3675 would be a better match. They also give stuff like metric or standard, and other stuff. I think the other brands probably have the same somewhere, I just remembered this one from when I used to run Fram filters.

 

[OR VietVet]

Just because they fit does not mean they are the same. I have not found other web sites yet that gives all the info but I see that Fram's web site does. For example, 2 Fram filters listed above, 3675 and 9837, are not the same. The 3675 has an "anti-drain back valve" and the 9837 does not. The one they call for my Tahoe, 3506 (small one), has the "anti-drain back valve" so I think the 3675 would be a better match. They also give stuff like metric or standard, and other stuff. I think the other brands probably have the same somewhere, I just remembered this one from when I used to run Fram filters.

The WIX site does show the 51042XP and the 51522XP as the same except for length.

 

[DRLexpress]

The WIX site does show the 51042XP and the 51522XP as the same except for length.

Good to know.

I just looked on AC Delco site and the PF46e and the PF61e had the by-pass valve and both afore mentioned Frams did not. I don't know how many of those Frams I've used in the past, oh well.

 

[Marky Dissod]

51522 will 'work' (for others), but I've never used the lowest tier / basic / no-frills option
(why I don't use Fram - haven't yet figured out their options structure)
Always aiming for better or more if not both ...

Separately, is it a bad thing to have two (redundant) anti-drainback valves?

 

[Fless]

Does an anti-drainback valve even function as such when the oil filter can is installed upright? Isn't the point to hold the oil in an inverted filter? Asking for a friend...

 

[Marky Dissod]

Does an anti-drainback valve even function as such when the oil filter can is installed upright? Isn't the point to hold the oil in an inverted filter?
Asking for a friend ...

Thanks for asking; yes, what Fless asked, does an anti-drainback valve do what it says when the oil filter is gravity-fed from above?
Also,

Separately, is it a bad thing to have two (redundant) anti-drainback valves?

As in, one in the pan plus one in the filter? Asking for myself, but don't see how the answer would not potentially help others.

 

[DRLexpress]

Just looked at the Wix site and the 51042xp and 51522xp do not have the by-pass valves just like Fram where as the AC Delco do have them. Who opened this rabbit hole anyway, I have things I need to do.

 

[DRLexpress]

Does an anti-drainback valve even function as such when the oil filter can is installed upright? Isn't the point to hold the oil in an inverted filter? Asking for a friend...

Yes, I think you are correct. I first brought up the anti-drain back valve as an example of different internals that you need to consider when changing oil filters. Now I find another difference, the by-pass valve, brand to brand even with numbers that are called for.

 

[Fless]

By "upright" I meant as they are installed on these engines, with the opening at the top. What good is an anti-drainback valve in this case?

I mean, it's not the same as a Subi boxer engine with the oil filter inverted at the top of the engine. That one needs the valve.

 

[SpareParts]

I just use a PF63 and change oil/filter no more than 5k miles and sometimes before 1.5k just because why not.