Oil Filters - WTF??

boybach

boybach

Well-known member
Dec 9, 2020
1,033
195
63
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
 
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
 
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
 
> 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
 
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
 
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.
 
Larry,

I have also been using the WIX 51258.

Take care,
Tom
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D.
 
Larry,
I know the Wix 51258 fits our Cad500's but wasn't sure it fits the 455 &
403 also -- does it?

Ken H.

> 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.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
I run the WIX 51258 on my 455.

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

>
> Larry,
> I know the Wix 51258 fits our Cad500's but wasn't sure it fits the 455 &
> 403 also -- does it?
>
> Ken H.
 
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
--
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
 
> 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....
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
 
Sounds like a pretty good indicator to me.

Ken H.

> > 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....
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
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
 
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

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
 
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
 
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
 
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
wrote:

> 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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.gmcrvparts.com
1-800-752-7502
 
> 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
 
> > 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.
 
You must log in or register to reply here.
GMCMI Fall 2026 Rally
Get your shine on at www.cruzingear.co

Share this page

Share this page
Top Bottom
Back