What makes some engine rattle with a/m oil filters

[vinu_neuro]

Over the years I've noticed that some engines and aftermarket filters tend to produce start-up noise. For example, Hyundai engines seem to be particularly sensitive and PureOne filters tend to produce start-up noise more so than others in varying engine types. Is the it drain-back valve specification that's of concern here or the pressure relief setting in the filter?

 

[stephen9666]

Some people here think the Hyundai filter noise will be start up noise, but that's not what has happened in my case and the TSBs from Hyundai don't specifically say anything about start up noise.

My Sonata gets noise with some aftermarket filters, but it's not start up noise, it's a tapping while running.

As far as why, all I've ever read here or anywhere else is speculation. No one really has any documented evidence showing thee reason why some Hyundai engines are sensitive to certain aftermarket oil filters. At least, there's no evidence that I've seen or been able to find.

 

[jdmstr22]

Not exactly sure why my guess is some may not flow as well as the OEM filter. I havea2006 sonata that is sensetive to some aftermarket filters especially purone and will you will hear alot of valve noise as the car idles. I usually use napa filters on the sonata ane dont have any problems with the currently running a napa platinum 41334.

 

[fisher83]

I think I read somewhere that the OEM Hyundai filters are somewhere around 18 psi or so and many aftermarket filters are quite a bit lower pressure. I prefer the OEM anyway because they are well built and reasonably priced.

 

[ZeeOSix]

Originally Posted By: stephen9666
Some people here think the Hyundai filter noise will be start up noise, but that's not what has happened in my case and the TSBs from Hyundai don't specifically say anything about start up noise.

My Sonata gets noise with some aftermarket filters, but it's not start up noise, it's a tapping while running.

As far as why, all I've ever read here or anywhere else is speculation. No one really has any documented evidence showing thee reason why some Hyundai engines are sensitive to certain aftermarket oil filters. At least, there's no evidence that I've seen or been able to find.


If it's engine noise/tapping while running with the oil hot at operating temperature, I can't see how any oil filter would be so restrictive that it cuts down oil flow to make the engine become noisy.

Could be the oil pumps in these engines that are so sensitive to any added restriction that they basically fall on their face if there is even the slightest restriction added to the system.

I'm assuming these engines have a positive displacement oil pump, but maybe they have some other design I'm not aware of (ie, electric driven pump, etc) which is very sensitive to system restriction level.

 

[77GrandPrix]

I was using Purolator Classics on my 2001 Taurus and began to notice lower end noise at start-up after a shutdown of several hours. I had also noticed that during a filter change the old filter would come off empty. Two OCI's ago I switched to Motorcraft oil filters and the lower end noise stopped. Also, when I take the old filter off it is full of oil. I will not use purolator anymore, at least on this vehicle.

 

[ZeeOSix]

Silicone ADBVs work better to keep the filter full after shutdowns.

 

[KCJeep]

Start up noise is usually attributable to the ADBV not doing a good job of holding oil. As you mentioned some vehicles are more sensitive to this than others. My Jeep is one such vehicle yet it's my third 4.0 and this has been the only one, go figure.

Running noise is not usually due to the filter IMO but if it is I agree with the speculation that high flow is needed to compensate for weak OEM oil pumps. Nobody knows the efficiency on the Hyundai/KIA filters, but the Honda's and Toyota's are apparently both high flow, low efficiency filters as well. The Hyundai TSB leads me to suspect the OEM filters are also low efficiency, high flow filters.

Silicone ADBV's help, but there is more to it than that. Some seem to seal better than others, and can shape and size seems to make a difference on my Jeep as well. Don't know why but I'm getting consistently better starts with smaller Jeep Liberty filters, even with the orange can, over the larger "spec" filters I am supposed to run even though the actual oil capacity is near identical between the two.

 

[LScowboy]

Originally Posted By: KCJeep
Silicone ADBV's help, but there is more to it than that. Some seem to seal better than others, and can shape and size seems to make a difference on my Jeep as well. Don't know why but I'm getting consistently better starts with smaller Jeep Liberty filters, even with the orange can, over the larger "spec" filters I am supposed to run even though the actual oil capacity is near identical between the two.


have you decided on a favorite between XG3600 and FL-400s ?

 

[Capa]

The only time I had rattle noise from starting the car in cold mornings was when I had a P1 filter and Mobil 1 oil. Of course, nearly everyone blamed it on the oil (and it was the first time that I used Mobil), but the funny thing is that I have stopped using P1 filters and I have continued using Mobil oils and the rattle hasn't returned in four years.

 

[RF Overlord]

Originally Posted By: stephen9666
Some people here think the Hyundai filter noise will be start up noise, but that's not what has happened in my case and the TSBs from Hyundai don't specifically say anything about start up noise.

My Sonata gets noise with some aftermarket filters, but it's not start up noise, it's a tapping while running.
Originally Posted By: ZeeOSix
If it's engine noise/tapping while running with the oil hot at operating temperature, I can't see how any oil filter would be so restrictive that it cuts down oil flow to make the engine become noisy.
Could it have something to do with the filter's construction? Bypass valve opening and closing or something like that? I've heard people say the Hyundai filters are like little tanks; could the can on aftermarket filters be flimsier and flexing?.

 

[DBMaster]

As told to me by the dealer when my 89 Accord was new, the car WAS sensitive to the filter used. I used quite a few different brands over the 23 years I had the car and some definitely allowed the oil to drain out resulting in start up rattle. The ones that definitely did that were Mobil 1, Amsoil, regular Bosch, and some Asian brand that was supposedly OEM equivalent. The ones that did not cause noise were OCOD, Distance Plus, Mahle, Supertech, Wix, and PureOne.

So, you can see that spending more money, or buying one that everybody thinks is good doesn't necessarily mean it will work well for you.

 

[Jim Allen]

I think this issue is often overhyped and misinterpreted. If the real deal, some have reported a few heat cycles are enough to get a misshapen ADBV to sorta reform itself against the tapping plate and seal better.

But I am astounded by all the complaints of startup noise.

I have owned more than 50 vehicles with IC engines since 1968 and I don't think I have ever experienced it personally. Over the 20 years I wrenched professionally for a living, I was exposed to it a couple of times that I can recall.

Finally, remember there really is no "aftermarket." The OEM has the same companies that build the "aftermarket" filters build the "OEM." Sometiems, there are few, if any, basic design changes between the two lines and many times the aftermarket filters are actually of higher quality.

I admit to being mystified.