Importance of filter angle with ADBV - Motorcraft

[901Memphis]

I am looking to grab a Motorcraft oil filter with my next change and am curious as to how important the angle of the filter is on the importance of having the ADBV being silicone.

Is a silicone ADBV more important if the filter is vertical and the inlet holes are completely pointing down, and is it the least important when the filter is completely vertical with inlet holes pointing up?

My filter is at an angle, but on my Vulcan V6 engine its pointing down slightly enough that i don't spill much oil when i take the filter off if i am careful, so how important is using the silicone ADBV in my case?

I am looking at going with the FL1A filter instead of the FL400s at next oil change, unless the rubber valve is not a good choice for my filter angle.

I have also considered the FL820s, which they sell at my local Walmart as well as the FL1A and FL400s, i know the FL1A fits my engine for which the FL400s is spec'd, does the FL820s also fit?

 

[ZeeOSix]

Silicone ADBV is best, but for short OCIs or for use in not very cold weather, than nitrile would be OK.

 

[901Memphis]

I understand that Silicone is better, but my big question is.... Is there an angle that the filter would be orientated in, in which the ADBV is not important such as facing straight up with the inlet holes?

I want to use the 820S filter but some people say it won't fit because the threads are different?

 

[nwjones18]

It must be because I know many GM vehicles that have the filter facing straight up have no ADBV at all. I do not really see the purpose if the filter is at an angle that would naturally hold the oil in the filter. Just my opinion.

 

[901Memphis]

The ADBV does only keep oil in the filter right? Its not designed to keep any oil actually in the block is it?

Considering the FL1A if the ADBV isn't an issue

 

[justinf89]

Originally Posted By: 901Memphis
Its not designed to keep any oil actually in the block is it?



Thats exactly what I've always wondered. In my 4.3L, the filter is vertical mounted and has an adbv in it. I just figured it was for other applications but I really think it kind of holds some oil in the block.

 

[tomcat27]

if your filter is mostly up and down you should be cool. I had one of the first Jeep 4.0's and the filter was upside down. I had a few bad ADBV's on a few Purolators - I'd get clatter at startup. nvr had that problem with AC, Wix. At the time I suggested to Purolator that they develop a "premium" filter. perhaps I helped them dream up the Pure One?!?!?!?

 

[nwjones18]

Its not like the nitrile valve on the FL1A is really a 'bad' choice to begin with. I use them on my truck all the time and the filter sticks straight off the side of the block. The only ADBV issue I've ever had was with the OCOD.

 

[AuthorEditor]

I use the FL1A on a diesel where it is mounted nearly perfectly horizontal, and I haven't noticed any particular problem related to the ADBV. Even after a 1-year OCI and then a drain of several weeks with the hole pointed down there was still plenty of oil left in the filter when I cut it open. The ADBV still seemed supple and appeared to be sealing well. They are robustly made filters and I wouldn't hesitate to use them for normal OCIs, especially if you will not be starting the engine under extremely cold conditions where the silicone material might perform better. My understanding is that nitrile is plenty durable, but does not have the sealing properties of the silicone at very low (below zero) temperatures.

 

[mark pruett]

I wouldn't sweat it; I put about 180k miles on a 50k V6 Vulcan in my old Ranger using primarily Motorcraft FL400S filters, because they were the best bang for the buck at the time.

The engine didn't burn any oil even at 230k miles, and UOAs came out great.

(I think we tend to fixate on extremely minor things here. the difference in wear, etc... that you'd see from the difference in ADBV materials would probably only show up when the engine hits 500k or so)

 

[AuthorEditor]

Will the FL1A fit on the Taurus? It's longer and fatter than the FL400s. I'm not sure you really gain enough filter area with the FL1A to make a difference and at my Wally World price and availability is the same.

 

[RF Overlord]

Originally Posted By: 901Memphis
am curious as to how important the angle of the filter is on the importance of having the ADBV being silicone.
No relation at all. The reason for a silicone ADBV is for flexibility in very cold weather and for longevity. Nothing at all to do with mounting angle.

Quote:
i know the FL1A fits my engine for which the FL400s is spec'd, does the FL820s also fit?
No...the threads are different.

 

[endeavor to persevere]

Originally Posted By: nwjones18
It must be because I know many GM vehicles that have the filter facing straight up have no ADBV at all. I do not really see the purpose if the filter is at an angle that would naturally hold the oil in the filter. Just my opinion.


GM specs an anti drain back valve on all its truck filters that are verticle. Chammpion labs who makes the AC Delco filter told a while back that thay did not make an AC Delco filter without an ADBV.

When you take the filter off a 5.3 see how much oil runs down from the block. Its a lot. If this oil in the passages is allowed to drain out, the passages would have to fill up each time and could cause a start up tick.

This is from some one who sold filters..

I am no engineer when it comes to this but I will tell you what I have been told by the engineer at Wix that I know. The ADB valve is important on certain engines no matter how the filter is mounted. On our GM engines and others with the filter mounted upright, it allows oil to remain in some of the passages where it would otherwise drain back.

Again, I asked this same question and was told that if it is desiged in from the OE, it is vital that it be there.

 

[nwjones18]

Originally Posted By: endeavor to persevere
Originally Posted By: nwjones18
It must be because I know many GM vehicles that have the filter facing straight up have no ADBV at all. I do not really see the purpose if the filter is at an angle that would naturally hold the oil in the filter. Just my opinion.


GM specs an anti drain back valve on all its truck filters that are verticle. Chammpion labs who makes the AC Delco filter told a while back that thay did not make an AC Delco filter without an ADBV.

When you take the filter off a 5.3 see how much oil runs down from the block. Its a lot.
If this oil in the passages is allowed to drain out, the passages would have to fill up each time and could cause a start up tick.

This is from some one who sold filters..

I am no engineer when it comes to this but I will tell you what I have been told by the engineer at Wix that I know. The ADB valve is important on certain engines no matter how the filter is mounted. On our GM engines and others with the filter mounted upright, it allows oil to remain in some of the passages where it would otherwise drain back.

Again, I asked this same question and was told that if it is desiged in from the OE, it is vital that it be there.




Now that I think about it a little more. Your right. I was just specifically thinking about an old caprice.

 

[901Memphis]

I will probably just stick to filters that have silicone valves and avoid the rubber