[quote author=Mark Craig link=board=7;threadid=20616;start=0#msg193857 date=1065532293]
Sittenbull2,

We too have been a negative posting memeber on the typical 4 layer gaugze filters in the past for the reasons the guys here have stated, way toooooo much dirt got thru. A few months ago AFE designed the Pro Guard 7 and it stops dirt as well as the standard paper filters per the AFE flow and entrapment tests. Since then we have become a warehouse for them and have sold a bundle of the OEM replacement filters as well as the Magnum intake systems with the Pro Guard 7 filters in them. I never though I would be endorsing a gauze filter but this one works and stops the dirt. It's built from 5 layers of gauze, each layer being a tighter weave that the previous one and then two layers of non woven polyester, it works great. The prices you quoted for one of the other brands is quite high, as we sell the OEM drop in in Pro Guard 7 for less than you mentioned. Call us if you have questions at 866-455-7788.

Mark @ DPPI
[/quote]

Mark,

Have you guys gotten away from the Foam type filters? Didn't you have the Western Diesel filters similar to the Amsoil 2 stage type?

 

MSparks,

Don't have any association with that company any more, long story related to a lot of issues etc. At the time foam was the only media that in my opinion would stop the dirt and increase air flow. Now that the PG7 is available it stops the dirt as well as a paper filter per AFE's testing and flow much more air than a foam filter can that stops as much dirt etc. Cll us fi you need any tech info etc.

Mark @ DPPI

 

[quote author=KATOOM link=board=7;threadid=20616;start=15#msg194748 date=1065674471]

dieselgeek: No sand or dirt will get to the bearings unless you pour it into the crankcase. At the most it will score the cylinder walls and cause oil consumtion and loss of cylinder pressure, ring wear and a whole bad list of problems.
[/quote]

I hate to push the issue - but if Blackstone shows me that silicates have incresed dramatically in my OIL when I run K&N filter (I made sure it sealed up properly - I did not even get oily compressor blades or slime in the intake tract like some here have) - then isn't it safe to assume that the sand made it's way down past my rings and into the crankcase? I certainly did not pour any sand in there :-)

 

I hear what your saying and YES your right, the air was obviously dirtier with the K&N but I'm still pretty sure that no "sand" got in your bearings. First of all the increase in silicates is a byproduct of low filtration, usually a leak but in your case a bogus filter. And this test doesnt say more sand than normal in your oil just more silicates, which is a mineral. Then the oil your bearings see's has to pass through the oil filter first so I would have to assume that the level of microns that your oil filter catches will stop the debris. But isnt this why we change our oil more frequently in high dust conditions?
Good topic here. And its nice to see so many guys care about their ride.

 

Great thread guys, I'm learning a lot here. I replaced my stock filter with an Amsoil oiled foam filter. The seals are really sweet, but now I'm wondering if this is a good filter to be running (?) The PG7 sounds pretty interesting.

Any thoughts on the Foam filter? Thanks

 

The size of the particulate in the oil samples are less than 5 micron I believe and the typical oil filter on the engines are not able to filter down to that level, I think I have heard around 10 micron? The increased silica is a problem as a wear element but again it can be ingested through bad seals or loose oil cap etc. There are alot of variables that can come into play here.

Also what kind of increase are we seeing here? 10%? 100%?

How much silica in a base sample of oil? There is some..

What other wear metals are increasing with the filter? If you see and increase in Tin, Aluminum or Iron then you can safely say that you are wearing your engine. If not, then its hard to say that the increased silica is doing anything other than get you worried.

J-eh

 

What... no answers??? :

J-eh

 

The K&N Filters for our Dodge CTD Pickups has been a
controversial subject for a long time, not only on this
website but also on others.

I have an old 96' Dodge 12 valve with almost 220,000
miles on it. The truck is "moderately" BOMBED and I
run it hard but take good care of it. I changed to a
K&N filter from the time the truck was new, running it
in the stock airbox. At around 98,000 miles I changed
to the Scotty I, running the round conical K&N. I ran
that unit until the Scotty II came out which came
with the newer AFE unit. I have NEVER experienced
one problem with ANY of these filters!! I have also
done oil analysis and have NEVER had one area out
of the "normal" range including silicates! I have said
for a long time that the biggest problem with these filters
is IMPROPER CLEANING AND OILING (either too much
or not enough)! After the K&N cleaning solution is
sprayed on and the filter rinsed, that filter has to be
dried out COMPLETELY before the oil is applied! Then
the oil needs to be applied "lightly" on each pleat and
then the clean oiled filter be allowed to dry some.
How many users of these filters do this everytime??
I say not many, and this brings out the problems with
them. I personally have witnessed this on many
occasions.

I think "erics 76" post pretty well sums up this whole
issue! Use what you think will work best for you!

-------
John_P

 

I agree John, user preferrence.

However this isn't the first time I have asked this question about the particulate count. I asked the same question on the TDR about 3 years ago with the same response.......................................... ........ :-X


I would like someone to either state it here or PM me with the results of the oil analysis to determine what is going on.

J-eh

 

Please correct me if I am wrong, but doesn't the Scotty II use an AFE? ???

I am thinking I will go either AFE Megacannon, or Scotty II. BTW - leaning heavily towards the Scotty.

Matt

 

gsdog1:

Yes, you are right the Scotty II does use an AFE Filter
but some believe that ANY oiled filter yields the same
result. The newest AFE (Proguard 7) is supposed to be
even better than older ones, but again it is also an
"oiled" filter, therefore many think they are bad.

-------
John_P

 

I went to Pep Boys Saturday looking for advice on air filters. They told me the K&N will flow more air but also passes more fine dirt. They showed me the new $22 Purolator 55378. It has a thick spun cellulose pad glued to the top side of the pleated paper. The idea is that the pad will stop the big particles and allow the paper to last longer. I hate the way paper filters seem to mostly get dirty only on the top edges of the pleats, so I'm going to give the Purolator a try.

 

this is another subject that I can talk about, I am very patricular about my vehicles, so I investigated, the K&N does flow more air, but at the same it allows more dirt into the engine by way of larger holes. I called amsoil for what might be the best filter on the market for a diesel. (TS-160)

 

Fear not Lil Dog, I've been out of touch for about a month - when I get home next week I'll dig up our samples of before and after and can answer the "how much difference in silicates" question.

For those who've run K&N for many miles - can these folks also post up a before and after compression test on the cylinders? I'd think cylinder scoring would be the first thing the higher particle count affects...

-dg

 

[quote author=petey link=board=7;threadid=20616;start=30#msg198575 date=1066578201]
this is another subject that I can talk about, I am very patricular about my vehicles, so I investigated, the K&N does flow more air, but at the same it allows more dirt into the engine by way of larger holes. I called amsoil for what might be the best filter on the market for a diesel. (TS-160)
[/quote]
At a car show I went to an amsoil guy that was showing how bad the K&N filtered. The bonehead was washing and oiling the piece of K&N before each demo. The piece of K&N that he used was worn out.

Just about anyone can make their product look better than the other guy's if they want to.