AC Delco PF46 Or Fram TG3506

[endeavor to persevere]

OK guys, I called AC Delco just now and asked if the AC Delco PF 61 oil filter has an anti drain back valve, the answer from AC Delco is...NO IT DOES NOT.

This should settle it.

Have a good one,

Don

 

[gmctodd]

Hmm.... No wonder ther is so much confusion on this issue. I just got my email response from Champ labs. They claim it does have a ADBV!! This is my letter to them:

I have a supply of AC PF61 filters (pre E-core design) that I have been using
on my GMC pickup in place of the short PF46 that is called for. I was always
under the impression that the PF 61 was a longer version of the PF 46. I am
being told that the PF 61 has NO ADBV, but there appears to be a black rubber
seal inside the 6 smaller holes.Is this the ADBV?

I guess I should first confirm that this filter is indeed a champ filter. It
has six evenly spaced outer holes with the large center hole raised and a "G"
stamped on the face.

Thank You,
Todd


and their response....

If you are looking into the smaller outer holes, and there is a black rubber seal, this is the Anti-Drain Back Valve. The PF 61 is the longer alternative filter for the PF46. You can use the PF61 in place of the PF46 as long as you have the room and clearance to do so. By your description, yes this is one of the PF61 filters that we do manufacture.


Bob Buckman
Tech Rep
Champion Labs
1-800-882-0890

 

[labman]

Originally Posted By: SuperBusa
I doubt they are not going to design a special filter just for GM engines that don't need a bypass valve built into the filter.


It has been reported here a number of times that the Ecores for Gm engines that have their own bypass don't have the second set of holes for the unneeded bypass.

 

[SuperBusa]

Originally Posted By: labman
Originally Posted By: SuperBusa
I doubt they are not going to design a special filter just for GM engines that don't need a bypass valve built into the filter.


It has been reported here a number of times that the Ecores for Gm engines that have their own bypass don't have the second set of holes for the unneeded bypass.


That's what I thought ... guess you didn't see my other post after the one you quoted here where I mentioned that.

 

[gmctodd]

I too just spoke to tech #58 @ ACDelco who stated " I've been working with Delco oil filters for over ten years and the PF 61 does NOT have a ADBV." So I asked him what the rubber seal inside the smaller holes was he stated "That's the bypass valve"

So I called Champ labs and they said the ACDelco guy was an idiot! Every PF61 manufactured by Champion has an ADBV. and the E-core has the combination valve.

 

[SuperBusa]

Humm ... ACDelco Tech Dept doesn't even know the technical side of their own filters. Nice ... gives you a real warm fuzzy.

 

[SuperBusa]

Humm ... ACDelco Tech Dept doesn't even know the technical side of their own filters. Nice ... gives you a real warm fuzzy.

Originally Posted By: gmctodd

So I called Champ labs and they said the ACDelco guy was an idiot! Every PF61 manufactured by Champion has an ADBV. and the E-core has the combination valve.


So I take it the engines that the PF61 is specified for has the filter bypass valve built into the engine block or filter mount? If so, then I would believe the PF61 has a ADBV and no bypass valve.

 

[crazyoildude]

The pf61 absolutly has an anti drain back valve next time you see one try to blow into it you cant...the pf58 older design you could blow into..

 

[RF Overlord]

Originally Posted By: gmctodd
I too just spoke to tech #58 @ ACDelco who stated " I've been working with Delco oil filters for over ten years and the PF 61 does NOT have a ADBV." So I asked him what the rubber seal inside the smaller holes was he stated "That's the bypass valve"
It wouldn't surprise me to learn that Tech #58 is a cubicle-dweller who has never even seen the filter assembly line and only knows what he reads in manuals.
Originally Posted By: SuperBusa
ACDelco Tech Dept doesn't even know the technical side of their own filters. Nice ... gives you a real warm fuzzy.
Until I read these last few replies, I would have thought ACD would have at least a vague understanding of their own products...but now I too am noticing the distinct lack of warm fuzzies. Hearing Champion's answer just reinforces my confidence in them and their products.

 

[labman]

Chrysler for a while was hiring legally blind people to work in their call centers. They all work from a script. It was a fine opportunity for the visually impaired that too often are denied a chance to contribute to society.

 

[rbarrios]

late to the topic.
but found out about the E's yesterday.
PF-61E is the new one. old one PF-61

 

[yaris0128]

If your willing to pay $4 get a Purolator classic. Willing to pay over $7? Save and get a Purolator PureONE. Basically just get a Purolator over Fram or AC Delco. Both of those filters are nothing special.

 

[GMBoy]

Well, for me it's never another AC Delco after I had TWO PF46's fail on me. I wrote extensively on that issue a year or 2 ago. I also won't use a Fram. But to answer your question of the 2? I'd use the darn Fram. Sidenote--- I use and like Bosch filters.

 

[yaris0128]

Originally Posted By: GMBoy
Well, for me it's never another AC Delco after I had TWO PF46's fail on me. I wrote extensively on that issue a year or 2 ago. I also won't use a Fram. But to answer your question of the 2? I'd use the darn Fram. Sidenote--- I use and like Bosch filters.


Id pick the Fram (excluding the OCOD) anyday over the AC Delco's cheap Ecore filter. That plastic center core is just pathetic, and then theres a fiber end cap!? Just complete garbage. The OCOD has a leg up over that, and I hate to even say something like that.

 

[Gary Allan]

Out of all the failed Warner filters that were used in quick lube service (WARNER is a no advertising budget filter for CHAMP and a predecessor to the Ecore) there were no media breaches with GM vehicles. At the time the "clicker" bypass was under suspicion as being the cause of the breaches. Since I had opened many ST's with the aforementioned clicker, I reasoned that the rash of media breaches was due to the quick lube crowd being somewhat negligent in timely OCI's and that the filters were left in service too long and to the point of deteriorating the media to the point that it could not withstand the bypass setting. There was probably some merit to the idea that the clicker mechanism was somewhat "numb" and incapable of fine pressure regulation, but it would surely fall into some sensible limit of how much PSID it allowed.

I suspect that an Ecore on any GM with an intact in block bypass valve would never have an issue. I could possibly see the nitrile combo valve having some problem, but I'd more expect it to involve bypassing while cold and not at its given rating.