Freezing up where is the filter located?

Freeze plugs only leak coolant. It is likely that the oil is coming from above it.

https://www.google.com/search?q=dodge+durango+oil+filter+location

It has an air cooler. There is a lot of information on Durango oil leaks here

https://www.google.com/search?q=dodge+durango+oil+leak

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A common cause for a clog is frozen water in the line. There is also a possibility that the water filter for the ice maker is clogged.

Possible Fix: Locate and replace the water filter. Filters for icemakers are typically located inside the refrigerator (to keep them from freezing)

It is impossible to propose a diagnosis without knowing the YEAR, MAKE and MODEL of your vehicle.
That being said, replacement of freeze plugs on any vehicle is not a minor undertaking. The mere failure of a freeze plug suggests poor maintenance of the vehicle over time, and is often a precursor of additional underlying cooling system damage.
To replace freeze plugs, often the engine must be removed, or at least decoupled from the car and elevated, to access the freeze plug location. Once you have access to the freeze plug location, you need to pry out the existing freeze plug, removing all rust deposits from the visible cavity and filing the freeze plug seating surface smooth, then use a mallet and large wooden peg to install the new freeze plug.
Once you are done, it is highly advisable to replace the thermostat in the vehicle, check the condition of the radiator, and be certain to maintain a 50/50 ratio of antifreeze to water, using only filtered water.

snow throwers do not have air filters. it is not a dusty environment and they could collect moisture and freeze up.

Either the vents that are located on the lower right side are open too much or the temperature is too cold inside due to the thermostat not functioning properly.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_4570d45317834dd3

Make sure the filter is clean and plenty of air comes through, when coils freeze it is usually caused by low air flow coupled with lots of humidity and low air temperature in the space to be cooled. Clean the filter, fan and gently brush all dust and debris from the intake of the cold coil and retry it. If the basement is already cool and you are trying to dehimidify you should use a dehumidifier that features defrost controls.

Freezing is a bad sign... but dont give up yet...
these are the signs that will cause freeze up...
dirty filter
t'sat not shuting off
cooling a room too big for the unit
settings at max but room is still hot
and the worst case... a/c leaking freon..
the leaking part is bad cause if you get someone to put it back in next year (or sooner) you have to call em back to recharge it again...
if everything checks out then it is the leaking freon... throw away...
what you pay $100 or so???
hope this was helpful

Cracked engine??!!
Yes there are freeze plugs, but you need to keep your coolant up to a level that it won't freeze!
You could have, and should have it checked for, major damage and need a new engine!

Just to the right and above the accelerator pedal you need to remove the left sound insulator panel. Then remove the filter access cover by pushing down and then pulling out. It kinda pops off. Remove the tape on the first filter and then remove the filter by pulling the filter tab. Remove the tape on the second filter and then remove second filter by pulling the filter tab. Remove the third filter by pulling the filter tab. I know you didn't ask about all that but just in case you wanted to replace them.

fuel filter is tucked inside framerail,just under driver side door,this location is not good,in extremely cold or snowy conditions the filter itself is known to freeze.