Buick Oil Filters

The Buick oil filter offered now is smaller. Has any one used the smaller one. Does anyone make the correct one any more?

 

Al, are you talking about the AC Delco PF24 filter?

 

https://ph.baldwinfilters.com/baldwin/en/baldwin-spin-on-lube-filters/b39-baldwin

 

Yes

 

Thsnks!

 

I ran the Purolator filter awhile back, it was twice the length of the AC PF47 but same diameter, no issues.
I don’t remember the number, but running a smaller filter has NO draw backs

 

I run a NAPA filter, I forget which one. But its white, I rip off the sticker, and put the reproduction PF24 sticker on it.

 

Baldwin B9 is bigger, if it will fit.....
https://ph.baldwinfilters.com/baldwin/en/baldwin-spin-on-lube-filters/b9

 

I bought both Scott, but haven't tried the B9 yet. Be interested if anyone has put one in.

 

If anyone is using the WIX brand of oil filter, I’d say use with caution.

I used two of their large oil filters and both had issues.

WIX p/n 51372 replaces Motorcraft FL820S.
WIX p/n 51258 replaces PF24.

Both oil filters use a two piece head. One piece of steel with the threaded hole and multiple oil holes w/ anti drain back valve. Which, in my case was very poorly sealed to the outer section or ring of steel that’s crimped to the filter body. You can tell this because the metals are two different colors or alloys.

Their smaller oil filters do not use this design. The head of the filter is all one piece.

My problem first arose on the ‘70 Electra. Two days after my oil change, it took forever to prime the filter and extinguish the oil pressure light. I took the advice of one of the members here. Disconnected the coil wire and ran the engine until the oil pressure light went out. This would take three 10 second runs until the oil pressure light went out. Then reconnect the coil wire and start the engine. It was like I was priming an empty oil filter every time I started the engine after it sat OFF for any length of time.

The second issue arose after I used the WIX filter on my ‘05 Lincoln Town Car. Every time I started the engine to go to work, or, eight hours later, start the engine to come home, the lifters were clacking for a very long time after cold start-up. Again, like I was priming an empty oil filter.

After two weeks of this nonsense, I replace both oil filters with the factory oil filter. Both problems went away immediately.

Why? What was the cause?

I still have new, unused WIX oil filters for both cars. I took one of each and blew into the threaded hole. Air easily, rapidly exited each filter where the two different metals that make up the head of the filter are supposed to be welded or sealed together. Only one of those filters passed a smaller amount of air.

So, if your engines oil filter is mounted horizontally, all the oil will drain back into the crankcase between those two pieces of metal. The anti drain back valve works just fine, but is useless when the assembly of the two different metal pieces is very poorly assembled.

Anyway, thought I’d pass along some very useful information on an oil filter widely touted on many YouTube channels.

I’m sticking with what’s been working for years and cannot recommend WIX oil filters until something is done with their quality control issues.

Paul

 

I just went through recently trying to figure out which filter to use on my '70 455 also, as stated the Wix/NapaGold 1258/51258 is the Factory PF24 replacement, the 1049/51049 is the same just 0.84" longer and comes in white.
Hope this helps!

Jeff

 

I thought I had a WIX filter on my 400, cause that's what I use on everything else. After reading this I had to check. I must have bought a few AC Delco PF24's for it a while back, as that is what is on there now.

 

Thanks for the input, just curious, the 51049 longer filter, is there any specific reason for it being longer ? (68 350 is my application)

 

The longer filter just gives you extra filtration capacity! So if you have clearance most guys just do the longer filter! It will fit on my 455 but it is tight!

 

Good to know thanks! Just did a oil change so next one I’ll try the longer.

 

I have always used the Wix 51258 but the last two filters I have had the same issues with drainback. I thought about your idea on the two pieces of metal and decided to change to a Baldwin B9 just to see if there was a difference. I just changed out filter only as the oil has 3 months and 1500 miles or so. Obviously first start isn’t going to show any difference as the filter has no way of being full so I left judgement until a day or two later and a couple more cold starts. Two days later and the Wix would take 4-5 seconds or so to build oil pressure but with the Baldwin it was almost immediately after it settled to fast idle.
This 4-5 seconds of waiting for the oil gauge needle to move has bothered me. I have gone through the pump recently and otherwise have great pressure for an older rebuild 40 years ago. 45-50 cold idle and 25 at hot idle after freeway driving. A hot start will build pressure immediately but with the wix of late the cold start waiting for 4-5 seconds had me concerned. When I rebuilt the pump I spend a lot of time making sure gear clearances were good and were more than happy everywhere except cold start after not running for a while. I would notice after 3-4 hours it would drain the filter enough to be noticeable.
Enough rambling. Thanks for the idea, it definitely made a difference with my cold starts to change from the Wix. I also will add that I didn’t always have this issue with the Wix, previously the filters were ok but the last two changes I have noticed the drainback.

 

I’ve been using the wix filters the last several oil changes and noticed the same issue… I thought it was a feature… I am going to change and try a different filter now.

 

69RIV, srobnr,

Glad I could shed some light on this and that others have noticed the same thing. Not only that, but the delayed register of oil pressure during cold startup went away after switching out the WIX brand of oil filter.

I went back to another auto parts store and pulled a few random, large WIX oil filters that utilize the two piece head design. I pulled them out of their cartons and gently blew thru the threaded hole of each one. Every single one allowed air to pass between the two different metal plates that make up the head of the oil filter. Some more so than others.

Definitely a manufacturing/assembly defect with zero attention to quality control.

What exactly is the purpose of a silicone rubber anti-drain back valve if the oil exits the filter body via two improperly mated metal plates?

Another observation. As the oil shears down over mileage driven. That hot, now thinner oil, more easily passes between even the narrowest gap between those two plates. Resulting in a near empty oil filter after just 8 hours of engine downtime.

If an engine manufacturer recommends a specific oil filter featuring an anti drain back valve. Currently, the larger WIX oil filters with a two piece head, may not meet those specifications.

I did read somewhere, where WIX had been bought out. If true, may be the reason for the current issue.

 

Wix is now owned by Mann and Hummel. They also own several other large brands including Purolator. They produce Bosch filters as well. Interesting discussion as I noticed some oil pressure issues. Now I need to swap filters and see.