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Air bath oil filter? #5318385 01/10/20 05:04 AM
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dlundblad Offline OP
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TL; DR I’m looking at a late 70’s diesel Ford tractor tomorrow that has an air bath oil filter. I’m surprised something this new has such a primitive setup.

Additional reading if you like tractors: Dad and I are looking at a Ford tractor tomorrow. Japanese made late 70’s early 80’s. 4WD, gear drive, ag tires and diesel. For those of you who know about my great grandfathers Wheel Horse that I have, this Ford belonged to him as well.

I of course had to look it up and it has an air bath oil filter. I’m somewhat surprised something this new has such a primitive setup. I know nothing about vintage tractors so perhaps it’s not as abnormal as I think it is. Either way, it doesn’t sound efficient.

The only thing I have to compare it to is my Kubota garden tractors that are of the early to mid 80’s to late 80’s vintage. They use spin on filters. My neighbor growing up had an old mid 30’s international B that he did a filter conversion on so he could use a 3/4-16 thread filter so perhaps the same could be done here. No idea at the moment.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 195k M1 0w40 Mahle OX149D
97 Chvy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980

Re: Air bath oil filter? [Re: dlundblad] #5318389 01/10/20 05:10 AM
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PimTac Offline
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I’m surprised a oil bath was in use at that late date. This is a tractor though.

They worked well. On our old cars when we changed the oil we also drained the air filter, cleaned it all up and filled with 30 grade which we had used on the cars.


2017 Mazda CX5
Valvoline Advanced Synthetic 0w20
Roki OEM filter.
Re: Air bath oil filter? [Re: dlundblad] #5318396 01/10/20 05:42 AM
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DuckRyder Offline
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AIR bath OIL filter?!?!

Really? Not:

OIL bath AIR filter?


Robert
  • 2019 Volkswagen Jetta R-Line
  • 1972 F100 Ranger XLT (445FE/C6/9” 3.50 Truetrac)
  • 2002 Ford Ranger XLT 4D Supercab 3.0L
Re: Air bath oil filter? [Re: dlundblad] #5318420 01/10/20 06:45 AM
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Kira Offline
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Birds gotta swim, fish gotta fly....

Re: Air bath oil filter? [Re: dlundblad] #5318427 01/10/20 06:53 AM
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Cujet Offline
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Just an FYI, an oil bath-air filter does a very poor job of filtering dirt and dust from the air.


People who count on their fingers should maintain a discreet silence.
Re: Air bath oil filter? [Re: dlundblad] #5318428 01/10/20 06:53 AM
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wwillson Offline
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I suspect you mean an oil bath air filter. John Deer 10 series tractors in the 60s came with oil bath air filters. They are very effective at cleaning the intake air, but are time consuming and messy to service. If I recall correctly, they required 10wt oil, which was difficult to find, unless you got it from the John Deere dealer at an inflated cost.

Re: Air bath oil filter? [Re: dlundblad] #5318432 01/10/20 07:03 AM
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Chris142 Offline
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You want to use a non detergent oil in that air filter.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
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Re: Air bath oil filter? [Re: dlundblad] #5318438 01/10/20 07:13 AM
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Neely97 Offline
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VW used them through 1972.

They were a maintenance item that often got overlooked.

Last edited by Neely97; 01/10/20 07:14 AM.
Re: Air bath oil filter? [Re: dlundblad] #5318446 01/10/20 07:21 AM
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PimTac Offline
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Back when Mount St. Helens blew, those vehicles with oil bath filters fared much better than their paper filter counterparts. The paper elements packed up with ash quickly. A ton of engines were ruined by the ash intake.


2017 Mazda CX5
Valvoline Advanced Synthetic 0w20
Roki OEM filter.
Re: Air bath oil filter? [Re: dlundblad] #5318457 01/10/20 07:38 AM
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VQ35DE Offline
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Oil bath was the norm up thru 1968 at least for GM.


2017 Mazda CX-5 GS AWD
Re: Air bath oil filter? [Re: DuckRyder] #5318467 01/10/20 07:54 AM
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dlundblad Offline OP
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Originally Posted by DuckRyder
AIR bath OIL filter?!?!

Really? Not:

OIL bath AIR filter?


Perhaps I said it backwards.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 195k M1 0w40 Mahle OX149D
97 Chvy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980

Re: Air bath oil filter? [Re: wwillson] #5318468 01/10/20 07:55 AM
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dlundblad Offline OP
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Originally Posted by wwillson
I suspect you mean an oil bath air filter. John Deer 10 series tractors in the 60s came with oil bath air filters. They are very effective at cleaning the intake air, but are time consuming and messy to service. If I recall correctly, they required 10wt oil, which was difficult to find, unless you got it from the John Deere dealer at an inflated cost.


So it may take a spin on oil filter then ?

I’ll find out for sure tomorrow.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 195k M1 0w40 Mahle OX149D
97 Chvy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980

Re: Air bath oil filter? [Re: dlundblad] #5318514 01/10/20 09:17 AM
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Farnsworth Offline
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My Honda has one, and it was made to be used in dusty conditions. Honda 7 hp rear tine rototiller, flat head engine, bought new in 1981. Looks like this.

https://www.ebay.com/i/124020759485...Plqr55gIVj-NkCh0AMgo_EAYYASABEgK_VvD_BwE

Re: Air bath oil filter? [Re: dlundblad] #5318521 01/10/20 09:27 AM
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Kruse Offline
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Oil bath air filters are probably one if the most misunderstood components of a vehicle. Most people think that the incoming air actually bubbles through or that the air goes through the oil.
Actually, the air makes a 180 and the dirt doesn’t make the same turn as the air and gets trapped in the oil by centrifugal force. Not as efficient as a paper filter, but an oil bath filter can hold much more dirt than a paper filter.

Re: Air bath oil filter? [Re: Kruse] #5318533 01/10/20 09:46 AM
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Farnsworth Offline
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Originally Posted by Kruse
Oil bath air filters are probably one if the most misunderstood components of a vehicle. Most people think that the incoming air actually bubbles through or that the air goes through the oil.
Actually, the air makes a 180 and the dirt doesn’t make the same turn as the air and gets trapped in the oil by centrifugal force. Not as efficient as a paper filter, but an oil bath filter can hold much more dirt than a paper filter.


Doubt anyone here thinks air bubbles through oil in an oil bath. They work as you say. My Honda has an oil wetted foam as well inside. The bath gets a lot of the dust and the foam gets the rest.

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