Originally Posted by SubieRubyRoo
Originally Posted by Triple_Se7en
Not very strong, for it hasn't a silicone ADBV.
More baseless drivel. Just because silicone is preferred because of a handful of stories about hardened ADBVs (on applications that probably mount threads up anyways) doesn't mean nitrile is not a valid material choice in probably 90%+ of applications. Two of the most respected filter manufacturers, Donaldson and Baldwin, both nearly exclusively use nitrile ADBVs. If they were causing a warranty claim you can bet it would get changed to silicone, since 1 warranty claim to rebuild an engine would likely pay for 10 lifetimes of filters, especially on some of the Diesel engines these companies' filters have built their brand reputation on.
Just like conventional or syn-blend oil, nitrile is perfectly fine for filter construction when used as intended by the manufacturer.
Originally Posted by hallstevenson
Problem is, people endlessly repeat FALSE information over and over. Some people read it, then repeat it.
There are those who insist that a car can come with an engine failure, the mechanic sees a non-OEM filter, and they get out their big, old "DENIED" stamp on the warranty paperwork. It's simply not true.
Originally Posted by Mad_Hatter
Originally Posted by hallstevenson
Problem is, people endlessly repeat FALSE information over and over. Some people read it, then repeat it.
There are those who insist that a car can come with an engine failure, the mechanic sees a non-OEM filter, and they get out their big, old "DENIED" stamp on the warranty paperwork. It's simply not true.
+1
Sure, if you look around hard enough you can find substandard OEM parts mfgs, but at the same time many aftermarket mfgs are OE suppliers. So it cuts both ways... ...
All of you are making good points, actually great points.
Just because a filter has a silicone ADBV does not necessarily mean that the valve will keep oil from draining back.
I had a WIX Premium filter ADBV fail to keep oil from draining back. After about 2500 miles of service, the startup rattle was obnoxious so I changed it. Problem solved.
Fast forward 1 year. Same vehicle but the filter was an Autozone STP eCore with a nitrile ADBV. The filter lasted though a 6000 mile OCI. The vehicle sat in the airport parking lot for 7 days over Thanksgiving and again 5 days over Christmas. No startup rattle with this filter. Champ Labs got this filter right. I would expect similar results with SuperTech.
Now, having said this, I will probably be stoned by the WIX/NAPA Gold fans.