Where do you locate oil filter on a 2003 mercedes c180

Question edited for clarity and it is P- Zero, not P- letter Oh.

All the reasons for P0172 running rich.

https://www.google.com/search?q=2003+Mercedes+C180+Kompressor.+When+start+getting+code+P0172

Connect it to a professional grade scan tool computer and it will tell you exactly which component is causing the issue. It needs fixing quickly, because when the system thinks it is running rich it compensates by making it run lean, adding less fuel and more air which overheats pistons, bores and worst of all burns valves.

https://www.google.com/search?q=auto+electrician+near+me

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Its located on the air cleaner box (the box where your air filter is) Its had cylindrical shape and kinds square on the top its black in color and had a plug on it. There is rubber intake hose connected to it. Good luck and thanks for using Fix-ya.Here's what it look's like.

Follow the air intake hose to the throttle body at the engine. Beneath it you'll see a black top with a raised hexagonal protrusion. This is the canister that contains the oil filter. You'll need a 32mm socket to remove the top to access the filter.

mercedes say that 1ltr per 1k is acceptable.you dont say what mileage the car has done but over 70k i would recomend putting in 20/50 instead of 5/40.all forced air engines are designed to use oil to keep em sweet.turbo bearings/compressor bearings etc...

2004 Heritage & Lightning ( guess this is your config, with posted in 2003 section ).

Looking at the engine, the air filter housing is the large round tube on the right hand side ( driver's side or left when reading descriptions )
The IAT is in the pleated section of the intake ( factory intake ) to the left of the air filter, about where the power steering fluid reservoir is at ( it should be pointing towards the back of the truck ).
Small black connector with a plastic wire loom on it.

2004 Non heritage ( New Body Style ) :
It is on the side of the large housing that holds the air filter ( on the stock intake, not a FIPK kit from K&N or the likes ).

Looking at the engine, the air filter housing and tray are on the top ( 2 latches hold the air filter tray in ), on the right hand side just behind the top of the T shape ( looking down on it ).

The connector should be black with a trace of red on it.

This car does not use the common "spin on" style oil filter. It uses a cartridge style (common back in the 1950s and 60s) style oil filter. The filter housing is located on the top front of the engine on the driver's side. The filter element is accessed by removing the black plastic top of the filter housing. Wrap a rag around the plastic top and very carefully use a pair of slip joint ( aka Channelloc) pliers to remove the top of the housing. It is a normal right hand thread and screws off. The filter element is found inside.
Charlie

Hi. the air filter is in a cylindrical looking device that is connected to the intake throttle body, via plastic flex hose. it runs horizontal. you will have to un clip the plastic housing and extract the filter. i will post a picture below.

I got the same problem about a month ago.
I've changed the gearbox fluid and filter and it's OK now.

The transmission fluid is not to be checked or touched unless there is a malfunction in the system and the fluid has to be drained to repair it. The transmission is sealed form the factory and the fluid lasts the lifetime of the unit.

It is a cartridge type and is situated behind the engine near the body on the left side. You can see it clearly as it looks like a black can with a big nut on top. To make it easier when you look at your engine your fuel filter is on top and the oil is just left from it little down. Hope this helps.