Wix 51348

Guess I wouldn't be judging oil filers based on air filters, and vice versa.
 
Are you positive it's nitrile? I get that the color is grey or black vs the red or orange, but how do you/we know the grey/black is nitrile and not silicone? Are you just assuming this from the color of it?
I'd bet it's not "black silicone", a burn test would probably show it's nitrile.
 
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