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Lawn Mower Oil Filter Ratings/Specs, Cross Reference?

YoshiMoshi3

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Nov 2, 2022
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I'm noticing lawn mower oil filters tend to not list filter specs like "99 % efficiency at 20 microns" there also tends to be no specs on when the bypass valve opens etc. So there is really no way to compare oil filters without this information? For example my lawn mower came with John Deere AM125424 oil filter. Looking at the product page https://shop.deere.com/us/product/AM125424:-Engine-Oil-Filter/p/AM125424, and there is no specs at all. I have found this website https://www.oilfilter-crossreference.com/, which allows you to put in a filter part number and it will pull up supposed equivalents. It seems efficiency ratings are more of a car thing. At trying to find an equivalent oil filter that will work, the threads have to match, I have to have enough length before running into an obstruction, and same diameter, it should work just fine. What is the typical thread used on oil filters? But would putting a car oil filter on my lawn mower be a bad idea, because it may have a higher differential pressure rating before the bypass valve opens? I can get a much longer oil filter to get more filter media.
 
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mrjaw14

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For what it worth I run a Motorcraft filter on my husqvarna mower and it’s been fine. I did look up the oem filter and matched the bypass pressure and googled for others using the same filter before I did it to get some additional confidence it would be ok.
 

JeepYJ

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But would putting a car oil filter on my lawn mower be a bad idea
There’s not really a “car oil filter” but just engine oil filters. I use “car” filters all the time on small engines.
A good place to check filter ratings and thread sizes and gasket diameters etc is Wixfilters.com
You can search for your Deere replacement filter on their site.
 

mikegt4

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Wix probably has the most complete specs like the listing by Firebrick43 posted, Baldwin isn't far behind. These lists can help determine what to buy if you need a shorter filter to fit into a tight place or a longer one for more capacity. Most manufactures just list what engine the filter will screw on to which can get you into real trouble.

I happen to use a Wix 57035 shown above or a Baldwin B7165 on my Walker zero turn after initially using a difficult to find extra short and expensive Kohler (space related application) filter. This is my 25 season with my Walker and the engine still runs great.

 

rust in the eye

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A "car" oil filter that fits will be fine and cost less, many use the same filter as lots of Toyotas.
Micron rating? Really? Its a stinkin' lawn mower. Fill the crankcase with dirt and grass clippings it will probably last the season.
 

Firebrick43

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Very few filters are going to have a 1/100 pass thru rating @ 20 microns beta ratio (aka 99 percent) unless they are large and have synthetic media in the filter. Something unrealistic in any small filter as they don't have the media area to keep pressure differential acceptable level.
 

KnurledNut

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I'm noticing lawn mower oil filters tend to not list filter specs like "99 % efficiency at 20 microns" there also tends to be no specs on when the bypass valve opens etc. So there is really no way to compare oil filters without this information? For example my lawn mower came with John Deere AM125424 oil filter. Looking at the product page https://shop.deere.com/us/product/AM125424:-Engine-Oil-Filter/p/AM125424, and there is no specs at all. I have found this website https://www.oilfilter-crossreference.com/, which allows you to put in a filter part number and it will pull up supposed equivalents. It seems efficiency ratings are more of a car thing. At trying to find an equivalent oil filter that will work, the threads have to match, I have to have enough length before running into an obstruction, and same diameter, it should work just fine. What is the typical thread used on oil filters? But would putting a car oil filter on my lawn mower be a bad idea, because it may have a higher differential pressure rating before the bypass valve opens? I can get a much longer oil filter to get more filter media.
What brand is your engine?
For a while I was sourcing the AM125424 from my John Deere dealer for some of our Kawasaki's as they were a little cheaper.
I now use the genuine Kawasaki 49065-0721 filters. (Was preceded by the discontinued 49065-7007.)
My local Advance Auto keeps non-automotive and HD filters in the back room. The Carquest Premium 84035 is also compatible and is made by Baldwin. They look like this: https://www.ebay.com/itm/178073202370
 

Firebrick43

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What brand is your engine?
For a while I was sourcing the AM125424 from my John Deere dealer for some of our Kawasaki's as they were a little cheaper.
I now use the genuine Kawasaki 49065-0721 filters. (Was preceded by the discontinued 49065-7007.)
My local Advance Auto keeps non-automotive and HD filters in the back room. The Carquest Premium 84035 is also compatible and is made by Baldwin. They look like this: https://www.ebay.com/itm/178073202370
I would bet that the premium 84035 is a wix. It follows the numbering. The last 3 numbers are the same as the wix 57035, just as the napa gold is 7035.

Last I knew the HD filters at carquest were baldwin and the Premium were wix
 
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KnurledNut

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I would bet that the premium 84035 is a wix. It follows the numbering. The last 3 numbers are the same as the wix 57035, just as the napa gold is 7035.

Last I knew the HD filters at carquest were baldwin and the Premium were wix
1779657885139.png

The old ones used to say Clarcor/Baldwin before Parker Hannifin acquired them in 2017.
1779658905370.png
 
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YoshiMoshi3

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Very few filters are going to have a 1/100 pass thru rating @ 20 microns beta ratio (aka 99 percent) unless they are large and have synthetic media in the filter. Something unrealistic in any small filter as they don't have the media area to keep pressure differential acceptable level.
I think maybe the amsoil filters do at 20 microns? Also what is meant by the beta ratio exactly? Wix catalog lists for there 51056 that it has a nominal micron rating of 21 and that the beta ratio is "2/20 = 6/20". What exactly is the meaning of this? From AI
1779668266111.png
So if there are 2 particles upstream before the filter and 20 particles after the filter... obviously not the meaning of "X/Y" in the WIX data.
What brand is your engine?
For a while I was sourcing the AM125424 from my John Deere dealer for some of our Kawasaki's as they were a little cheaper.
I now use the genuine Kawasaki 49065-0721 filters. (Was preceded by the discontinued 49065-7007.)
My local Advance Auto keeps non-automotive and HD filters in the back room. The Carquest Premium 84035 is also compatible and is made by Baldwin. They look like this: https://www.ebay.com/itm/178073202370
I also have a kawasaki
 

JeepYJ

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How do you get anything done when all you do is over analyze everything
For any engine, but especially a lawnmower engine, the air filter is far more important to keeping the engine alive than an oil filter.
 

PCustoms

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For any engine, but especially a lawnmower engine, the air filter is far more important to keeping the engine alive than an oil filter.

Someone better start a thread in how to get the best air cleaner now...
 

JuncleJohn

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Omaha, Nebraska
For more than 20 years I’ve been running cross referenced filters on my riders and zero turn. Quaker State, Fram, Wix, Car Quest, Super Tech …

I refuse to pay $15 of more for an OEM lawn mower oil filter. It has never caused any problems with my lawn equipment.

John
 

Firebrick43

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I think maybe the amsoil filters do at 20 microns?
Yes, like I said it is synthetic media. BUT, it better be larger for increased area because when you make the pores smaller you also decrease the flow rate. The only way to increase the flow rate to where it should be is to have more filter media ares
Also what is meant by the beta ratio exactly? Wix catalog lists for there 51056 that it has a nominal micron rating of 21 and that the beta ratio is "2/20 = 6/20". What exactly is the meaning of this? From AI
1779668266111.png
So if there are 2 particles upstream before the filter and 20 particles after the filter... obviously not the meaning of "X/Y" in the WIX data.
You have to stop looking at AI, as It only gave you half the of the answer and a chart does just fine in showing what you need to know

I don't know why but the "2/20 = 6/20" has to be a typo. A beta 2 @ 20 microns make perfect sense, but a beta 6 isn't a thing that people use in the industry and can not have the same 20 micron a the beta 2 number.


1779671856630.png


Life's Hard, its harder when you fret over oil filters. Put the recommended size on by the manufacture in a trusted brand and stop worrying about it.
 
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