AIR FILTER

[Seaside Pete]

Hi

 

Maybe a silly question but, can anyone tell me how much oil has to go in the air filter on a P15, is there a level line?

 

Thanks

 

Pete

[_shel_ny]

There is should be a level, or "fill to here" line

Edited February 4, 2015 by shel_ny

[Plymouthy Adams]

As Shel states..should be a mark..page 309 of the manual say that after proper cleaning with kerosene, fill the reservoir with one pint of SAE 50 for all temps above freezing and for temps that are freezing and below..again, one pint but use SAE 20

[Tones52]

My air filter also has the "Oil Level" line and I filled it to that level with SAE 50 wt oil after replacing my water distribution tube (what a drama that was). What I didn't realize is that there was a cracked rubber gasket that fit around the inside opening of the air filter so when I fired my engine up and started driving around I saw this in my review mirror

 

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I thought I punched a hole in my block when trying to extricate that WDT but fortunately it turned out to be that cracked air filter gasket. Oil from the air filter was getting sucked into my carb.  I patched up the gasket with a sealer and it's held up so far.

 

I've tried looking for a replacement and found one at Pep Boys that may work.

[Seaside Pete]

Thanks for the replies but, my air filter does not have any fill marks as can be seen in the pic's also the oil that can be seen in the pic is all that was in it so not sure if this is correct or not?

 

Pete

 

 

[Don Coatney]

From the P-15 reference/maintenance section of this web page.

 

Air Cleaner 
Approximately 1 Quart Motor Oil. ( SAE 50 for 32 degrees and above, SAE 20 for below 32 degrees.)

[Plymouthy Adams]

I would have to question that the amount of oil being a quart in the reference section here as correct,  could have been a typo where pt. is pint and qt. is quart.  I think I would defer to the manual.

 

My factory service manual for 1936- 1942 Plymouth states fill to line...

 

My 1946-1954 Plymouth manual says one pint in the lubrication section of the book....

 

My 1941 - 1948 Dodge service manual says one pint in the lubrication section of the book...

 

I think a quart would encroach on the air space needed for the incoming air to make its turn..

 

 

Picture is from current e-bay listing for said items...

Edited February 5, 2015 by Plymouthy Adams

[P15-D24]

Re the pt. vs. qt question. Think it depends on the type of air cleaner you have. I believe the heavy duty (about twice as tall as the one pictured) use a quart. The stock a pint. 

[Tones52]

Hi Seaside Pete,

 

Was your air filter modified? It seems like in that 2nd photo, the bowl part that fits on the carb had the bottom section cut out. Maybe I'm looking at it wrong.

 

If you need photos of an air filter, I can PM some. The '52's isn't much different from the earlier models.

 

Tony

[Seaside Pete]

Hi Tony

 

No I don't think it has been modified. Some pic's would be great, I will also take a pic of the underside of the top, and some measurements.

 

Thanks

 

Pete

[greg g]

It is important to realize that the oil in the reservoir is not a filtering media. Its purpose is twofold in that the design of the filter causes incoming air flow coming downward to be forced at high speed into a 180 turn. The particles in the air cannot make the turn, and are captured and held by the oil, secondly the mist of oil evaporates are caught by the upper filter material enhancing its effectivness at capturing the smaller stuff. Much like the stuff you are supposed to put on a modern k and n deal. Pretty sure a modern multi viscosity product would do just as well as the factory recommended weights.

[Don Coatney]

And in my opinion used engine oil would also work well in the filter. Not sure why the factory recommended the heavier weights unless it was to retard slushing around when starting, stopping, or ascending, descending hills.