[GMCnet] Oil Filters - WTF??

[twll...@gmail.com]

It turns out this oil filter selection lark is a bit of a minefield for a newbie like me.

I went shopping for a 1978 Oldsmobile Toronado oil filter at Rock Auto and Rock Auto gave me this list to choose from:

(403 motor)

PRO-TEC 166
PUROLATOR L20123
CHAMP / LUBER-FINER PH59
BOSCH 3423
WIX 51045
HASTINGS / BALDWIN LF230 {#B30}
FRAM PH3675
FRAM PH3506
FRAM DG3429
FRAM TG3506
FRAM TG3675
ACDELCO UPF61R {#19391148}
MOBIL M1206A
BOSCH D3423
FRAM HP20

Normally I'd have gone with the Wix but I read something about it having no anti-return valve so bought the Bosch 3423 instead.

When it arrived it looked kinda skinny compared to the oil covered fatter one that was fitted to the engine so I'm thinking maybe I bought the wrong
filter?

Do I need to buy another one?

Larry
--
Larry - Victoria BC -

1977 Palm Beach VIN TZE167V101295 - 40,000 miles, PO said everything working but forgot the word NOT. New wiper blades, New SS exhaust system,
operational Onan genset, R134A A/C, New fuel lines
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[Burl Vibert]

At least you only bought one D3423, I bought two. :lol:
--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model

[twll...@gmail.com]

Did yours fit?

Larry
--
Larry - Victoria BC -

1977 Palm Beach VIN TZE167V101295 - 40,000 miles, PO said everything working but forgot the word NOT. New wiper blades, New SS exhaust system,
operational Onan genset, R134A A/C, New fuel lines

[Burl Vibert]

boybach wrote on Sat, 29 May 2021 23:13
> Did yours fit?
>
> Larry

I didn't try it yet, but it looks to be 1/2 the size of the one that's on, which is a NAPA 21258. I'll probably get another NAPA even though this
Bosch seems to have a lot of material in it based on it's weight.
Because of how they sit I don't think an anti-drainback valve matters.

--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model

[Dave King]

LOTS of people on this forum use and recommend a WIX. Perhaps someone will respond with what the recommended WIX is. I think there are 2 different
diametersof filters that will work OK
--
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada

[Larry]

I've been using the Wix 51258 since 2005. The longer version of that filter is Wix 51049. JWID
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

[tomk...@comcast.net]

Larry,

I have also been using the WIX 51258.

Take care,
Tom
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D.

[Ken Henderson]

Larry,
I know the Wix 51258 fits our Cad500's but wasn't sure it fits the 455 &
403 also -- does it?

Ken H.

[Rob]

I run the WIX 51258 on my 455.

Rob
Victoria, BC
76 Royale - Rear Twins/Dry Bath

> On May 30, 2021, at 3:31 PM, Ken Henderson <hend...@bellsouth.net> wrote:
>
> Larry,

> I know the Wix 51258 fits our Cad500's but wasn't sure it fits the 455 &
> 403 also -- does it?
>
> Ken H.

[twll...@gmail.com]

The diameter of the Bosch filter is only 2-15/16" but the gasket is at the extremities. It probably will fit but it sure is skinny.....

[Larry]

Ken Henderson wrote on Sun, 30 May 2021 17:31

> Larry,
> I know the Wix 51258 fits our Cad500's but wasn't sure it fits the 455 &
> 403 also -- does it?
>
> Ken H.

Well, when I made the swap from 455 to Cad 500, the oil cooler adapter came over from the 455, and the filter with it. Sooooo....

[Ken Henderson]

Sounds like a pretty good indicator to me.

Ken H.

[Scott Nutter]

The 2 Wix filters that Larry mentioned seem to be the GMC favorites. Also, it has been recommended to use a magnet on the filter to trap metal
particles.
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
installed MSD Atomic EFI
Houston, Texas

[twll...@gmail.com]

Neat idea about the magnet, I have a couple may as well stick 'em on then I guess!
Returned the Bosch filter to Amazon and picked up the Wix 51258 from Key2 this morning so panic over. Thanks guys

[John R. Lebetski]

Always start with the current ACDelco number and cross from there. The big block and 77 small block take a PF24 This supersedes the AC PF30 which
was same but no anti drain back ). The PF24 comes over from Buick where the filter was horizontal and had to have anti drain back. This broader use of
PF24 is for the simplification of SKUs The Wix cross over would be the 51258 which has anti drainback but no integral bypass. That’s good.
The 78 small block uses the Smaller PF58 used on other small block Olds like 307, the Caddy Northstar and others. Wix is 51045. This number info is
from GMCMI interchange.
If you go to wixfilters you can cross reference and see all the specs. Burst strength, microns, flow, and if it has anti drain back, or if it has
integral bypass. Get it first hand and current.
--
John Lebetski
Woodstock, IL
77 Eleganza II

[John R. Lebetski]

If you think about the magnet, it’s in dirty oil before the media, so yes you will see some trash particles attracted, that the filter media would
trap anyway, so I think it’s efficacy is falsely overrated. If the media isn’t filtering that out, you bought the wrong filter.

--
John Lebetski
Woodstock, IL
77 Eleganza II

[Jim Kanomata]

John L. I agree with you on the magnet.
I purchased it so I use it as an indicator of how much metal might be
coming through the oil.

On Mon, May 31, 2021 at 11:25 AM John R. Lebetski <gransp...@gmail.com>
wrote:

--
Jim Kanomata
Applied/GMC, Newark,CA
ji...@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502

[Burl Vibert]

JohnL455 wrote on Mon, 31 May 2021 13:12

> Always start with the current ACDelco number and cross from there. The big block and 77 small block take a PF24 This supersedes the AC PF30
> which was same but no anti drain back ). The PF24 comes over from Buick where the filter was horizontal and had to have anti drain back. This
> broader use of PF24 is for the simplification of SKUs The Wix cross over would be the 51258 which has anti drainback but no integral bypass.
> That’s good.
> The 78 small block uses the Smaller PF58 used on other small block Olds like 307, the Caddy Northstar and others. Wix is 51045. This number info
> is from GMCMI interchange.
> If you go to wixfilters you can cross reference and see all the specs. Burst strength, microns, flow, and if it has anti drain back, or if it has
> integral bypass. Get it first hand and current.

This is one of the odd differences between USA and Canada, I couldn't tell you where I could go and buy a Wix filter in this city.
I have never seen one on a shelf at any of the auto parts store I frequent. According to the Wix website, the nearest dealer is about 130km away.

--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model

[Larry]

blur911 wrote on Wed, 02 June 2021 19:39

> JohnL455 wrote on Mon, 31 May 2021 13:12
> > Always start with the current ACDelco number and cross from there. The big block and 77 small block take a PF24 This supersedes the AC PF30
> > which was same but no anti drain back ). The PF24 comes over from Buick where the filter was horizontal and had to have anti drain back. This
> > broader use of PF24 is for the simplification of SKUs The Wix cross over would be the 51258 which has anti drainback but no integral bypass.
> > That’s good.
> > The 78 small block uses the Smaller PF58 used on other small block Olds like 307, the Caddy Northstar and others. Wix is 51045. This number
> > info is from GMCMI interchange.
> > If you go to wixfilters you can cross reference and see all the specs. Burst strength, microns, flow, and if it has anti drain back, or if it
> > has integral bypass. Get it first hand and current.
>
> This is one of the odd differences between USA and Canada, I couldn't tell you where I could go and buy a Wix filter in this city.
> I have never seen one on a shelf at any of the auto parts store I frequent. According to the Wix website, the nearest dealer is about 130km away.

Do you have NAPA auto parts? Not sure, but I have heard that the Napa Gold oil filter is made by Wix. Maybe someone out there can confirm. If so, do
you have Napa?

--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

[John R. Lebetski]

Yes NAPA gold are Wix. First digit different. Rest of numbers same.

--
John Lebetski
Woodstock, IL
77 Eleganza II

[Burl Vibert]

Larry wrote on Wed, 02 June 2021 20:13

Yup, as John confirmed below, Napa gold is Wix. So my Napa 21258 on the engine is actually a Wix and easy to get. Thanks guys.

I'm running into a similar thing trying to change the top on my Miata, the 3M adhesive I need seems to have changed a digit in Canada (08011 vs
80119). Have to confirm if it's the same stuff with them tomorrow.

--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model

[Dave King]

There's an independent auto parts store about 2 miles from my house that seems to have NO problem getting
WIX filters for me with next day availability. I use them to get me filters for my DODGE Grand Caravan and
for my GMC YUKON XL when I still had it. Based on the part numbers in the oil filter thread I believe I have a
couple of versions of WIX Filters for GMC MHs. I have these in case anyone with a GMC MH is passing through
Toronto and is desperate for an oil filter. Oil would be easy to get 7 days week.

--
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada

[Russell Keith]

Larry,

I use the WIX 51049 on my 403.

Russell
--
Russell Keith,
1978 E2 "Harry" 403 (still carbureted), Danny Dunn Tranny, Thorley, Stock Brakes w/Remote Vacuum Brake Booster, Quad Bags, Dakota Digital Dash, 6.5 kW
Onan, Dunedin, Florida

[Chris Geils via Gmclist]

OE filter was ACDelco PF30. This is superceded by PF61. Yes it’s narrower than the 24 or 30 but is the filter GM recommends. I’ve been using
them for 7 years.
--
Chris Geils - Twin Cities / W Wa
1978 26' Kingsley w/ very few mods; PD9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, Alcoas, 54k mi

[Skip Hartline]

I tried the 51049 and I believe it is real close to the bolt flanges on the right axle, you can get it on, but it's scary close and it doesn't have
anti-drain back valving.
Just my 2 cents worth, I've tried several different filters but always come back to the 51258 just to easy to walk into NAPA and get.
Skip Hartline
--
74 Canyon Lands, FiTech,
3.7 FD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd

[John Wright]

Have used the Wix 51049 oil filter for 20 years without issue, does not interfere!

J.R. Wright
GMC Great Laker MHC
GMCGL Tech Editor
GMC Eastern States Charter Member
GMCMI
78 GMC Buskirk 29.5’ Stretch
75 GMC Avion (Under Reconstruction)
Michigan

[Jim Kanomata]

It is always best to use the filter with maximum media area as that gives
least amount of flow resistance and more area for particulates to land on.
I agree it is closer to a rotating part, but that is where we go by the
risk statistics and most of us do.

--
Jim Kanomata ASE

Applied/GMC, Newark,CA
ji...@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502

[Burl Vibert]

jimk wrote on Wed, 23 June 2021 23:59

> It is always best to use the filter with maximum media area as that gives
> least amount of flow resistance and more area for particulates to land on.
> I agree it is closer to a rotating part, but that is where we go by the
> risk statistics and most of us do.

This is where I wonder if those Bosch filters I got are good or not, they are heavy, like they have a lot of media in the can, but the can is smaller.
Might cut one apart to see, they were cheap and I have two.

Also, not GMC, but on the subject, I have a H6 Subaru that takes a fairly small filter, the update was to install an even smaller one as it seems the
original was too long and close to the exhaust and was picking up heat causing oil temps to rise.

--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model

[Chris S.]

I can confirm the Wix 51258 DOES fit the 403. Been using that one for 8 years, no problems at all with it.
--
Chris S. -
77 Kingsley, 3.70 FD, mostly OEM -
S.E. Michigan