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Black Silicone ADBV? #5391075 04/01/20 04:25 PM
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The Critic Online Crying OP
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Denso's aftermarket oil filters feature a black-colored ADBV. We usually associate black ADBV's to be nitrile, not silicone. However, the Denso website clearly states their filters feature silicone ADBV's:

https://densoautoparts.com/filters-oil-filters.aspx

I e-mailed Denso and they replied stating that the color of the ADBV does not matter and their filters have silicone ADBV's.

Is there any way to verify the material of the ADBV?


2011 Toyota Prius 1.8L - 207K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 146K - Valvoline Premium Blue Restore 10W-30
Re: Black Silicone ADBV? [Re: The Critic] #5391084 04/01/20 04:44 PM
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blufeb95 Offline
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Buy one cut it open and take a look for yourself, or if you've got a temperature controlled soldering iron I guess you could set it to like 200C and press it up against the adbv through the holes if it melts it's nitrile if it doesn't it's silicone.

Re: Black Silicone ADBV? [Re: The Critic] #5391088 04/01/20 04:53 PM
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ZeeOSix Offline
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Originally Posted by The Critic
Is there any way to verify the material of the ADBV?


Cut one open and put the ADBV in the freezer. If it is still very pliable at -20 F then it's silicone.

If Denso says it's silicone, then it probably is silicone.

Re: Black Silicone ADBV? [Re: The Critic] #5391105 04/01/20 05:09 PM
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Trav Offline
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Same thing with Viton O rings, they can be any color and the same durometer. People sometimes incorrectly associate color with performance or compatibility eg blue = methanol/E85, red/brown = high temp, green = A/C use and black for common cheap rings.
Bosch uses white for the ADBV on some filters.


ASE L1, Master. Deutsch Meisterbrief.
Re: Black Silicone ADBV? [Re: The Critic] #5391115 04/01/20 05:29 PM
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Imp4 Online Content
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Color is absolutely zero indication of materials of construction.
But color is a mighty good marketing feature/technique.

I believe Denso when they state silicone.
No matter what the color.

Re: Black Silicone ADBV? [Re: The Critic] #5391124 04/01/20 05:43 PM
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Lubener Offline
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Denso states it is silicon and that's good with me. Color is meaningless here.


The "thinking" man's friend.
Re: Black Silicone ADBV? [Re: The Critic] #5391386 04/01/20 10:01 PM
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CR94 Offline
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Silicone is clear or translucent. The color you see is added pigment or filler.


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Re: Black Silicone ADBV? [Re: The Critic] #5391487 04/02/20 01:53 AM
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blufeb95 Offline
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In this forum post How to identify a Silicone vs Nitrile ADBV (Post#4298216) , User E150GT reported this:
Originally Posted by E150GT
I dont know what a first time fit filter is but i just cut open a used OEM toyota denso filter and it had a black ADBV that I believe was silicone. It was super flexible and stretchy.

Last edited by blufeb95; 04/02/20 01:55 AM.
Re: Black Silicone ADBV? [Re: The Critic] #5391575 04/02/20 07:02 AM
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RamFan Offline
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Originally Posted by The Critic

I e-mailed Denso and they replied stating that the color of the ADBV does not matter and their filters have silicone ADBV's.


I emailed Denso several months ago about this and was also told they’re using silicone ADBV.

I can’t remember who, but there’s a board member that has something fierce against Denso (or so it seems) that I’ve gone rounds with on this issue more than once which led to the email.

The last Denso I cut open had one of the most pliable ADBVs I’ve encountered yet. I have another one in the garage waiting to be cut open, should get to it this weekend.


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