Amsoil Air Filter Flow Problems??

[John Berger]

Has anyone heard of or experienced any problems with dirt getting through the Amsoil foam filter? I know that there was a similar post with some negative experiences with the K&N Filter for our trucks. Someone e-mailed me on Friday and asked if I knew the flow ratio on the Amsoil filter. Can anyone help.

------------------
1999 Dodge Ram 3500 Quad Cab 5 spd; 4:10 LSD rear; Mag-Hytec diff. cover; US Gear EGT and Boost gauges. Amsoil foam air filter and synthetics from nose to tail.
Cummins Power, don't leave home without it

[This message has been edited by John Berger (edited 03-19-2001). ]

 

[Sled Puller]

I have never heard of dirt getting past the Amsoil filter. The flow rate is right with the K&N, and if the foam prefilter is put on the K&N, it surpasses it.

The biggest problem with the Amsoil filter is OVER oiling. It makes a mess.
Gene

------------------
1997 Cummins Dodge 4x4 Bombed & Amsoiled. Amsoil Premiere Direct Jobber, Member of: NRA Business Alliance, GLTDR, WANTED: Wrecked Dodges.
www.awdist.com

 

[SMorneau]

I have had very good luck with mine. It seals very well around the edges. I use the amsoil tack oil and it stays on the filter except where the foam forms the seal. The pipe to the turbo is clean and dry. It holds way more dirt than you can believe and never causes my filter minder to move.

Good Product!

 

[Missouri Mule]

Amsoil thinks their filter does a better job then K&N. What I have read some of the members are swithing back to oem filter or trying others because of dirt geting past K&N filter.

 

[John Berger]

I haven't done an oil analysis recently, but my silicon readings always came back well under average. Last reading was 5 ppm. As I understand this, that is the best indicator of how well the air filter is doing it's job.

------------------
1999 Dodge Ram 3500 Quad Cab 5 spd; 4:10 LSD rear; Mag-Hytec diff. cover; US Gear EGT and Boost gauges. Amsoil foam air filter and synthetics from nose to tail.
Cummins Power, don't leave home without it

 

[rotohead]

Have had the AMSOIL air filter in my AirBullDog Induction Hood for about 8 months now and first oil analysis showed 4 ppm for silicon. Happy with the fit and and price.
Chuck

------------------
'98. 5 2500 QC ISB 4x4 SLT, Auto w/Transgo shiftkit, JRE 4" exhaust w/5"Tip, DD II's w/Module&Elbow, VA box, Rancho 9000's w/in cab adjust, Mag-Hytec trans&diff covers, Jacobs E-Brake w/BD autoloc, trans temp, boost & EGT gauges, 2Low Kit, Brite Box, Steel Horse Billet Grilles, AirBullDog hood induction system

[This message has been edited by rotohead (edited 03-19-2001). ]

 

[amsoilman]

To answer the question regarding airflow, one must look at other things as well when it comes to airflow.

First off there is the size of particle the filter needs to filter out. In general, 5 to 25 micron particles are of the greatest concern when it comes to air filtration, as these size particles can and do get into the smaller clearances of bearings and such other mechanisms like valve rocker arms. If the filter is to restricted to filter out smaller particles, then the airflow is reduced. However, if it is too open then the filter is not efficient, and will allow larger particles to go through the media. Air filters are generally least effective when new, and will improve efficiency as the filter media becomes loaded. However, as this occurs airflow will decrease.

Airflow is indicated and measured in (CFM) Cubic Feet per Minute, and one must know the amount of restriction at the noted airflow in order to compare filters. At an airflow rate of . 25" water (H2O) utilizing a manometer, the Amsoil oiled foam filter had 200 (CFM) Cubic Feet per Minute compared to a Fram paper filter 80 (CFM) Cubic Feet per Minute. The K&N when oiled as per the instructions for off road service measured 100 (CFM) Cubic Feet per Minute. All these filters were of equal size.

Flow Restriction is measured as the pressure differential between the inside and outside of the filter element, and is expressed in inches of H2O or mercury. This is usually tested using a manometer with one side of the unit connected to the "inflow" side of the filter (higher pressure), and the other side of the unit connected to the "outflow" side (lower pressure). The pressure difference between the "inflow" side and the "outflow" side is then measured on the manometer. Our trucks have a similar device already on the air box that measures the pressure differential, called the "filter minder". As the air cleaner media becomes clogged and the air pressure drops on the "outflow" side of the element, the yellow disc will travel down and indicate when it is time to change the air filter element.

Life expectancy and efficiency of air filters are tested using SAE test method J726C where they introduce a measured amount of "AC Test Dust" of different particle sizes in the testing apparatus. The results of the tests are measured in "percent" of contaminant removed over a given amount of time.


Wayne


------------------
94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil. Optima "Red Top" batteries.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Mag-Hytec Transmission Pan, Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.
Wayne Owen