- Mercedes-Mercedes-Benz C-Class: How to Change Your Oil
Step by step instructions for do-it-yourself repairs
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DIY oil change, step by step, with pictures




proper level draining can detect and remov sludge better an evacuation.
there are pros and cons to each method.
Last edited by dave2001auto; Dec 15, 2018 at 08:19 AM.
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I use a similar one in which I need to insert a thin tube all the way down the ds into the sump. It is not strong enough to pull it up by the ds
i will test with a wet dry vac
Last edited by dave2001auto; Dec 16, 2018 at 08:36 AM.
I don't understand these electric pumps , the tubing is flimsy .
On good manual extractors the tubing is hard and has a wire running through it , plus your side head of triceps gets pumped up .
Do short / annual oil changes and the dispersants in the additive package keep contaminants in suspension , so no need to sump drain .
However I do sump drain the first time to check for fill quantity for future extractor method to match and to fit a Gold Plug magnetic sump plug .
If that is the only thing you do on your vehicle, then there is no better time to get under it and check if everything is working order, even if you have a warranty, since you may not see a slow leak until its too late and the warranty runs out, just because you didn't want to get your hand dirty once a year.
On my 2003 VW it further sucks out an oil cooler below the oil filter housing , this remaining oil would blacken the fresh straight away .
Coupled with the egr disabled the oil takes months now to even change a darker shade .
On my 2003 VW it further sucks out an oil cooler below the oil filter housing , this remaining oil would blacken the fresh straight away .
Coupled with the egr disabled the oil takes months now to even change a darker shade .
I would use a pump just to get what the drain plug couldn't, that would be a good use for it. The oil cooler on my m272 ,where the oil filter lives, there is always oil left behind which I might just start pumping out. I usually just flush it with half a quart of fresh oil let it drain oil but pumping it might be more efficient.
I do have that Amazon Black and yellow pump which I use to pump out coolant/brake and power steering fluid out from the reservoirs and it does a great job so It will work just fine in the oil cooler. How ever, I don't see it sucking out the 8+ quarts out from the dipstick tube. You need a quality pump that runs on air supply and uses vacuum to pump all the oil out of the crank case, "most of it".
Last edited by W204Motorsports; Dec 17, 2018 at 01:06 AM.


This sucker works!
It also works great for brake fluid flushing, as well as sucking out 80W-90 differential oil (even if it's cold).
I have been using one of these for years.
🤔
Last edited by arto_wa; Dec 19, 2018 at 10:04 AM.
Am happy now as this second pump works like a charm and have done the engine oil and auto. gear box, but for that I will have to still crawl under the Merc to drop and clean the pan and magnet. Will also doe the lawn mower, as that means lifting the lot; too heavy.
Nelson
Last edited by Colin G; Dec 19, 2018 at 11:59 AM.
The oil drain in on the rear driver side (left side) of the oil pan. I removed both engine under panels because I had never been under the car and didn't know what to expect - in hindsight, I think I could've just removed the rear under panel to get to the oil drain, but I'm not sure. I was in a bit of a hurry, so I didn't pay much attention as I put the under panels back into place to see where they actually covered.

Have a rag handy to clean up the wiring harnesses that M-B cleverly routed right under the drain - when the flow slows down, it will get onto the wiring.


The oil filter is between the air filter housing and the firewall; it's a black cap with TURBO lettering on it. (Why "TURBO" and not "OIL FILTER" or something like that?
) With the air filter housing in place it's unlikely you'd be able to get much of a grip on the oil filter cap. Even after removing the air filter housing (I was doing the air filter, too) to allow for better grip and leverage, I still wasn't able to get it going by hand, I had to use a wrench on it. Unfortunately, I don't recall what size the hex on the cap is, but it's pretty big.
As previously mentioned in this thread, for the C250, the oil filter is Mann HU514Y (or equivalent), which included the filter and correct o-rings. I have to say, I wasn't terribly impressed by the quality of the Mann filter, seemed pretty flimsy / cheesy. Based on the pictures in this thread, it appears the 4cyl filter is configured similarly to the 6cyl filter, but is longer/narrower. Yank the oil filter out of the cap, replace the 2 small o-rings at the bottom of the plastic tube, replace the big o-ring by the threads of the cap, push the new filter on and it's ready to reinstall. It took a bit of force to pop the new filter in place - I was a bit worried I was going to deform/break the flimsy-feeling Mann filter.
Refill through the oil fill cap
Last edited by AAIIIC; Mar 25, 2019 at 05:24 PM.
) With the air filter housing in place it's unlikely you'd be able to get much of a grip on the oil filter cap. Even after removing the air filter housing (I was doing the air filter, too) to allow for better grip and leverage, I still wasn't able to get it going by hand, I had to use a wrench on it. Unfortunately, I don't recall what size the hex on the cap is, but it's pretty big.Featured here is the cheapy oil extractor on its 4th year and still going strong. Extract approx 5.5 litres in 20mins or less. Well worth the money, at least for me!
https://www.youtube.com/watch?v=boMv...ature=youtu.be
Last edited by C0d3Sp4c3; Mar 25, 2019 at 02:37 PM.








