SliverGray

I am almost ready to change engine oil. I have a genuine oil filter, 9 quarts of Mobil 1 0W40, and ordered the Mityvac 7201 Fluid Evacuator Plus (Thanks to javavu). I popped off the front half of the plastic engine cover and looked at the oil filter housing of my 2008 C300 4 Matic. I did not know how to loose it, so I have searched about a tool to loose and tighten the oil filter housing. I found a cup wrench is used for loosing and tightening, but it did not mention about the size of a cup wrench. What size of cup wrench do I have to use? And where do I buy it?

Thank you.

nyca

Well, here is a post for a W203:

https://mbworld.org/forums/c-class-w...-pictures.html

talks about a 76mm in post 40.

BerBer63

I want to say 32mm, but I could be wrong.

SliverGray

I bought an oil filter cup wrench at AutoZone. It is Oil Filter "B" Cap Wrench, and the diameter of the wrench is about 76 mm.

Pete7874

I've got an Imperial one that says 74/76mm - 15 flutes and it doesn't fit the C300 filter housing.

RLE

MY oil filter cap wrench is a 3/8 drive Hazet 2169, 14 flutes and pretty close to 76mm. I've used it on every MB I've ever owned (back to 1985) with a spin-on filter plus my Porsche 944. My friend JB is bringing his CLK430 over tomorrow for another oil change using my $40 Topsider. I'll be changing the C300 next week the same way.

Takes about 50 strokes on the vacuum pump and 15 minutes to get it all out, by measurement.

RLE

Since I was all set up for it with the CLK430, I thought I might as well change the C300's oil today also.

So when I removed the front part of the engine cover, I was briefly confused at the peculiar appearance of the oil filter cap until I realized that the dealer's tech left his filter cap wrench on it after the last oil change. It even has an MB tool part number on it. It's been on there since last August when they did the A (or was it B?) service.

Start to finish, the oil change took 23 minutes which includes sucking it out with my Topsider and changing the filter mit O-rings.

I think I'll return it next week, just to embarrass him in public. Should be fun.

atsantis

Hello,

I own a 2004 C240 (W203) 4Matic (2.6L Engine) which I recently purchased. It currently has about 150K miles and I will be changing oil myself in about a couple of weeks. I understand that I need a special tool to remove the oil filter. For this purpose I plan on ordering the following:


Can some please let me know whether this tool will work?

Also, I called the local MB dealer (Ann Arbor, MI) and asked him for the recommended oil to be used and they told me 5W-40 Fully Synthetic. However, I read in the forum that the recommended oil is a Mobil-1 0W-40. Can some one clarify which oil is the really recommended one?

In order to do the oil change, I understand that I have to remove the rear-most panel under the car because that is where the oil pan drain plug can be accessed from. Is this correct?

A lot of members in this forum recommend using a "top-side" oil suction device. For this purpose, I have two options:
1) A manual Mityvac: or,
2) A pump that operates with an air compressor:
Any pros/cons with either one of these two pumps?

Sorry for the long post but I tried to put all of my questions in one post instead of following up each answer that I get with a new question.

Thanks in advance for your help!
A. Tsantis

RLE

The Topsider is a marine item and can be purchased at West Marine, a national chain and also from Amazon. The cost is about $50 but if you must spend more, buy one of the others. My Topsider is about 12 years old and still functions.

As to the two oils you mention, either one is OK. The 0W40 is more readily available than the 5W40 and can be found on sale periodically.

The filter cap wrench is a standard item. Why not go to a place that sells them and do a fit check before you buy one?

Pete7874

Not really sure. You posted this in the wrong forum. This is a W204 forum and your car is a W203. I'm not sure if your W203 has the same size filter cap as W204. Possible, though.

It's irrelevant. You need an oil that meets MB 229.5 spec. As long as it does, you're good to go. As was mentioned earlier, M1 0w-40 is easier to find. Walmart sells it in 5qt jugs for an everyday low price of $25 per jug.

Pete7874

And if your oil filter housing cap is the same size as on W204, then yes, the Assenmacher wrench you linked to (74mm / 14 flutes) should work. I personally use the 74.5mm version and never had a problem with it slipping, but supposedly the 74mm one provides an even better fit.

atsantis

Thank you all for very helpful feedback!

Vic in Wisc

A simple strap wrench attached to a 1/2" drive works like a champ on sizes from my VW GTI to my FRAM Nascar oil filters.

xXHotelCrazyXx

74.5 is not the right size...74mm is what you need

xuztujma

It is Oil Filter "B" Cap Wrench, and the diameter of the wrench is about 76 mm.

sixa

I know this thread is kinda old but just letting everyone know that the autozone 'B' wrench is NOT the right size, it is too big and slipped when I tried to use it to remove my filter housing on my 2011 C300. It does have the right number of sides on it but look elsewhere for a wrench. I'm getting the Assenmacher one for my next oil change. Luckily I had a strap wrench that I was able to use this time but the correct sized tool would have saved me a lot of time.

DJ BIS

My first time heearing about this "Fluid Evacuator" device for an oil change.
Why do you use one? How do you use one?
Easier/cleaner than just getting under the car and letting the oil drain?

muskaroxs

Harbor Freight has a kit with 5 different sizes for like $10

Pete7874

Are they metal or plastic?

bmwfunny

its 74mm by 14 flutes

js79

I can confirm. Oil filter B cap from autozone does NOT work. Marked part number 25401 76 MM. 14 flutes.

dennish

cheepo Harbor Freight rubber strap oil filter tool

Adi-Benz

i can check in my garage tomorrow

js79

I called on the powers of greyskull and just went He-man, I felt a little budge and a tear dropped from my eye.

Also the Mann filter I ordered didn't fit, and I barely made it to Napa auto parts before closing, I brought the oil housing with me since I was determined to finish the job. The Napa gold filter brand fit.

Buttoned up the bottom and put in 8.5 quarts of oil as per the manual and finished the job.