Oil draining or oil extraction when changing engine oil, what is best for real ?
Thread Starter
Senior Member
Joined: Feb 2014
Posts: 308
Likes: 20
benzw205
Oil draining or oil extraction when changing engine oil, what is best for real ?
Oil draining or oil extraction when changing engine oil, what is best for real ?
hello,
it seems that the official procedure from Benz for any C-class W205 since 2014 is vacuum / extract from the top, can you confirm ?
My feeling is that this procedure is not as good as draining, but Benz engineers cannot be totally dumb ? what do you think ?
But still, I think that if oil has never been drained in my car, I should at least once try to go where they will drain it to change it.
Thank you for your ideas.
hello,
it seems that the official procedure from Benz for any C-class W205 since 2014 is vacuum / extract from the top, can you confirm ?
My feeling is that this procedure is not as good as draining, but Benz engineers cannot be totally dumb ? what do you think ?
But still, I think that if oil has never been drained in my car, I should at least once try to go where they will drain it to change it.
Thank you for your ideas.
Junior Member
Joined: Mar 2019
Posts: 64
Likes: 15
C300
Oil draining or oil extraction when changing engine oil, what is best for real ?
hello,
it seems that the official procedure from Benz for any C-class W205 since 2014 is vacuum / extract from the top, can you confirm ?
My feeling is that this procedure is not as good as draining, but Benz engineers cannot be totally dumb ? what do you think ?
But still, I think that if oil has never been drained in my car, I should at least once try to go where they will drain it to change it.
Thank you for your ideas.
hello,
it seems that the official procedure from Benz for any C-class W205 since 2014 is vacuum / extract from the top, can you confirm ?
My feeling is that this procedure is not as good as draining, but Benz engineers cannot be totally dumb ? what do you think ?
But still, I think that if oil has never been drained in my car, I should at least once try to go where they will drain it to change it.
Thank you for your ideas.
Thread Starter
Senior Member
Joined: Feb 2014
Posts: 308
Likes: 20
benzw205
Member
Joined: Oct 2016
Posts: 169
Likes: 81
2016 C300 sedan
The manual Topsider works, but didn't last. There are other manual pumps on the market but I haven't tried them. I just posted another thread showing what I have used. I like the pneumatic one from Harbor Freight the best.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Member
Joined: Sep 2017
Posts: 174
Likes: 36
From: Central Oregon USA
2017 C300 Cab 4Matic
The question needs a survey of how much oil is extracted on average by the suction method. If its routinely just a few ounces short of the 7 quart capacity, it's not a big deal. I doubt it would make any difference in engine condition for hundreds of thousands miles with good syn oil. Syn oil doesn't break down in the same way as "dino" oil and doesn't produce the same level of contaminants.
Thread Starter
Senior Member
Joined: Feb 2014
Posts: 308
Likes: 20
benzw205
I read many reviews and the same amount of oil is changed when draining or extracting. Never all oil will be drained even when using the old fashioned procedure.
Senior Member
Joined: Aug 2019
Posts: 285
Likes: 77
2019 GLC300, 2017 E300
I pulled 7+ quarts out of my wife’s car with the extractor. I put in what the manual calls for and it’s perfect.
Senior Member
Joined: Aug 2019
Posts: 340
Likes: 189
From: Europe
09 SL500, 03 E320 CDI Wagon
Drain is the best, in regards to empty the pan total.
With extraction you will always leave some oil in the pan, not much, but still.
I like though to drain the oil for different reason.
I put a piece of filter cloth into the pickup bowl, just to see the "dirt" if there are any signs of wear, like white metal from the bearings, other metal or plastic grain, and how does it smell, ?
Also look for water, it comes first, when unscrewing the plug.
All that you don't see, if you extract the oil.
Sure you can filter the extracted oil afterwards, but in my experience, most of the "dirt" always comes with the last oil, and you don't get that out with extraction.
With extraction you will always leave some oil in the pan, not much, but still.
I like though to drain the oil for different reason.
I put a piece of filter cloth into the pickup bowl, just to see the "dirt" if there are any signs of wear, like white metal from the bearings, other metal or plastic grain, and how does it smell, ?
Also look for water, it comes first, when unscrewing the plug.
All that you don't see, if you extract the oil.
Sure you can filter the extracted oil afterwards, but in my experience, most of the "dirt" always comes with the last oil, and you don't get that out with extraction.
Senior Member
Joined: Aug 2019
Posts: 285
Likes: 77
2019 GLC300, 2017 E300
Drain is the best, in regards to empty the pan total.
With extraction you will always leave some oil in the pan, not much, but still.
I like though to drain the oil for different reason.
I put a piece of filter cloth into the pickup bowl, just to see the "dirt" if there are any signs of wear, like white metal from the bearings, other metal or plastic grain, and how does it smell, ?
Also look for water, it comes first, when unscrewing the plug.
All that you don't see, if you extract the oil.
Sure you can filter the extracted oil afterwards, but in my experience, most of the "dirt" always comes with the last oil, and you don't get that out with extraction.
With extraction you will always leave some oil in the pan, not much, but still.
I like though to drain the oil for different reason.
I put a piece of filter cloth into the pickup bowl, just to see the "dirt" if there are any signs of wear, like white metal from the bearings, other metal or plastic grain, and how does it smell, ?
Also look for water, it comes first, when unscrewing the plug.
All that you don't see, if you extract the oil.
Sure you can filter the extracted oil afterwards, but in my experience, most of the "dirt" always comes with the last oil, and you don't get that out with extraction.
