NAPA Gold 1381 still made by WIX?

[curt-s]

This used to be a thing a half decade or more ago, but I've been wondering post-pandemic if our good ol' Gold 1381 is till made by WIX..


They're 63% more expensive than an OEM filter up here, which I've used for many years, and lately I've been wondering if OEM is the reason behind my oil pressure skyrocketing to 60psi by the time I hit 2.5k even with a ported OFH and head mod on no shafts.

So I figured, why not try the ol trusty Gold since I can get the Napas local same-day, but not if they've switched to a lower quality manufacturer.

anybody know?

 

[greddy_1700]

Napa's website still lists the 1381 as made by wix, and as far as I know they havent changed anything.

 

[chrysler kid]

Try running a 1g dsm filter. Larger filter will reduce oil pressure

 

[99dsmer4g63]

I’m not sure on the filter as I’ve never ran a wix oil filter. I’ve had good results though with the wix fuel filter and water separator I used to run on my fass 165 pump on my 2nd gen Cummins.

Have you tried running a 1.8 mirage spring in the ofh relief valve. I run with no bs’s in conjunction with the 1.8 mirage spring, porting and running an external oil cooler on an evo3 ofh. I noticed the biggest difference with the spring though. Some people use multiple crush washers instead but I like the oem look/install. With 3 of them I am finally happy with where my oil pressure is now.

-Daniel

 

[SixBolt_16G]

Try running a 1g dsm filter. Larger filter will reduce oil pressure

This is what I do... Ive always run the larger 1g filter.

 

[chrisman287]

Try running a 1g dsm filter. Larger filter will reduce oil pressure

This is what I do... Ive always run the larger 1g filter.

1381 is the larger 1G filter and it’s still made by Wix (51381 is their part #)

I’m going to try Fram TG3950

 

[chrysler kid]

Ive always heard terrible things about fram, specifically the drain back valves.

Ive been seeing propaganda about motorcraft filters being very good. The FL810A is a big fatty that works on our applications.

I have been having issues on my civic si having cold start valve rattle on Mobil 1 filters, and switching to a motorcraft solved the problem

 

[curt-s]

I've generally always run the fat stubby 1G OEM filter, which I recall has more internal volume than the slimmer, taller one. That's the one that gives me apparent high pressure.

Funny enough, this short block came with the car and I haven't touched it, yet it has basically the same pressure as my last one. It doesn't have balance shafts and I don't know the state of the OFH porting, if any. (My original post was referring to my last short block in terms of OFH porting.)

But it does have my original head with a fairly aggressive oil mod.

With the pressure reduction methods in use, are we ensuring correct flow volume as well?

 

[We're on Boost]

I like the fat stubby ones too, like the Wix 51381 (or NAPA Gold 1381).
Besides being large, it has a properly high bypass valve setting, and correct gasket diameters for my OFH.
I looked for Bypass Valve psi range setting on the Motorcraft FL810A and all I could find was "yes". No numbers.
This Bypass Valve setting needs to be fairly high for our engines.
Also the gasket ID and OD. Because sometimes people use filters that don't even have the right gasket size for the land on their OFH.
Anyway if somebody can link me to a page that shows those numbers for the FL810A, I'd appreciate it.
Here's what a good spec table looks like for an oil filter:

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[Ceezdsm99]

Ive always heard terrible things about fram, specifically the drain back valves.

Ive been seeing propaganda about motorcraft filters being very good. The FL810A is a big fatty that works on our applications.

I have been having issues on my civic si having cold start valve rattle on Mobil 1 filters, and switching to a motorcraft solved the problem

Random question/input … I recently bought a Gst 16G (supporting mods ) came with a WIX 51381 big filter . Dipstick was over filled btw . When I changed the oil for the first time I changed it to a 3000Gt Filter from Autozone STP … My turbo blew not so much miles later , The turbine from the intake side Was Siezed (cheap Chinese turbo ) I know it’s not MHI but Could the change in filter have anything to do with the downside of the turbo ? OIL Starvation maybe just want to know if it would affect it . So I could just run what the previous owner had put …

 

[We're on Boost]

Could the change in filter have anything to do with the downside of the turbo

It's possible the filter could be a problem. You would have to look up the Bypass Valve setting which will be a number in psi.
It should be about 15 psi at least. The oil filters for turbo DSMs are all supposed to be spec'd that way.
A lot of more ordinary filters let the bypass valve open at around 5 to 10 psi.
If you can't find that spec for whatever oil filter you are looking at, you probably shouldn't buy it.
Note up in post #9 the spec Wix gives for the 51381 is 13-19 psi. That's good.
Anyway during cold starts when the oil is thick, and then again at high revs where the oil flow is very high, the bypass valve in the filter can open which lets unfiltered oil through. You want that to happen as little as possible.

It's probably more likely to be the turbo though.
Or maybe it's a turbo that needs higher oil pressure like the FP turbos do when they are not ball bearing.
On those turbos (the journal bearing turbos) people usually run the turbo oil line from a higher pressure location than what the stock location is.

 

[Ceezdsm99]

It's possible the filter could be a problem. You would have to look up the Bypass Valve setting which will be a number in psi.
It should be about 15 psi at least. The oil filters for turbo DSMs are all supposed to be spec'd that way.
A lot of more ordinary filters let the bypass valve open at around 5 to 10 psi.
If you can't find that spec for whatever oil filter you are looking at, you probably shouldn't buy it.
Note up in post #9 the spec Wix gives for the 51381 is 13-19 psi. That's good.
Anyway during cold starts when the oil is thick, and then again at high revs where the oil flow is very high, the bypass valve in the filter can open which lets unfiltered oil through. You want that to happen as little as possible.

It's probably more likely to be the turbo though.
Or maybe it's a turbo that needs higher oil pressure like the FP turbos do when they are not ball bearing.
On those turbos (the journal bearing turbos) people usually run the turbo oil line from a higher pressure location than what the stock location is.

Thanks for your input , that makes sense . I didn’t know it could affect it so much , I should’ve just ran the same filter until I got the same exact one . Since I know nothing of this build and it can be significant . I used the
STP Oil Filter S2808 , the turbo is just a fake Chinese big evo3 . Running around 20 psi of boost . Everything was fine till I got on the highway and coasted at 80 , then no boost at all . Checked waste gate and it opened and closed just fine . Took off intake and the turbo was siezed not wanting to spin Freely . Car still ran and idled fine , just no Boost . Stopped driving the gst since I know it can damage the engine if pieces of the turbine come off into the oil

 

[1990TSIAWDTALON]

I say it was just an Ebay Chinese turbo that bit the dust. Did it have enough oil pressure, who knows, but this forum always pushes the saying "Don't by Ebay Turbos".

 

[RamenPride]

Could the change in filter have anything to do with the downside of the turbo ? OIL Starvation maybe just want to know if it would affect it .

It's definitely a possibility, but not likely because most oil filters have a bypass. I'd say it was coincidence more than anything since it's an eBay turbo.

 

[BLACK'98DSM]

I have been having issues on my civic si having cold start valve rattle on Mobil 1 filters, and switching to a motorcraft solved the problem

I'm a little late to seeing this, but I concur. I recently starting reading 5-6psi hot idle pressure on my H23, I swapped the Mobil 1 filter for a K&N and I'm back to standard 12psi. It couldn't have been clogged with just a few miles and clean oil.

 

[Ceezdsm99]

I say it was just an Ebay Chinese turbo that bit the dust. Did it have enough oil pressure, who knows, but this forum always pushes the saying "Don't by Ebay Turbos".

Yeah most Definitely went because it’s shenshong special edition no doubt about it , it was just interesting to me that it happened not so long after I changed the oil and the oversized WIX filter , and went with Synthetic blend 10w30 .. because it has a valve cover leak and oil pan I didn’t want to run full synthetic

 

[gavingsx]

I work at a napa in New Hampshire. Wix has not been able to keep up with demand for the past couple of years so napa found another supplier. Now if you live on the east coast the filters are no longer made by wix they are made by proguard.