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C350 DIY Oil Change Pictures
#26
Then pump the oil extractor handle a few times and stop pumping. The built up suction does the rest. You might have to pump it a few times as the suction decreases but don't force it.
![](http://www.hotiron.com/images/c350oil12.jpg)
Then just pour the same amount that came out (I got 7 out and 7 in exactly) back in through the filler cap on the front left side. Use the good stuff. You are done.
[EDIT] Some additional information brought up from the thread below. The 3.5L motor's engine oil capacity is 8.5 quarts by the book and 8.0 quarts is what you should expect to get out (and replace) in an oil/filter change.
![](http://www.hotiron.com/images/c350oil12.jpg)
Then just pour the same amount that came out (I got 7 out and 7 in exactly) back in through the filler cap on the front left side. Use the good stuff. You are done.
[EDIT] Some additional information brought up from the thread below. The 3.5L motor's engine oil capacity is 8.5 quarts by the book and 8.0 quarts is what you should expect to get out (and replace) in an oil/filter change.
The picture of your pump looks like well OVER 7 Liters on my pump. If what you thought was 7 quarts actually measures 7 Liters, then you actually pumped out 7.4 Quarts . With these higher capacity oil sumps, the differences between quarts and liters are more apparent.
Here is a nifty conversion tool. http://www.sciencemadesimple.com/conversions.html
As for efficiency of the pump, I just changed the oil on my 3.2L last Tuesday. (8 Qt Capacity) I had 7.5 quarts in the sump, as measured by the oil capacity measurement screen on my 2001 model. I pumped out 7.1 Liters (all 7.5 quarts). I reinstalled 8 quarts, and the MFD display then measured exactly 8 quarts. I think the pump is plenty efficient.
#28
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2005 C55, 1988 260E, 2000 Chevrolet Silverado
Even when you drain it is impossible to get all the oil out. There is oil on top of the head around all the valves, in oil passages through the crank and in the oil pump. How much extra you get out doesnt matter in the long run. Just change your oil when you are suppose to and all is well. It's when you have 50,000 on regular oil and you just add a quart when the light comes on that is really bad. Drain it, suck it, who cares, just change it for goodness sakes.
#29
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2007 C230SS; 2014 ML350 BT
The debate on drain vs. suction is over. I conducted Wingless's test. It was a PITA, but I wanted to know my self and help the community.
I just changed my oil and first started by pumping it out using a pneumatic oil extractor. I extracted out the oil then pulled the drain plug. The results........Not a drop of oil came out.
I then poured the oil back in from my extractor to the engine and drained though the drain plug. I put the drain plug back in and fired up my extractor. All it did was gurgle sucked up a few drops of oil then just sucked air.
Bottom line, drain or suction, pick your favorite, they both get the same amount of oil out of the engine.
Stay tuned and I will add my oil change writeup to this thread.
I only did put in just shy of 8.25 quarts to fill exactly to the full mark on the dipstick. As Russell pointed out, you can't get absolutely all the oil out of the engine.
I just changed my oil and first started by pumping it out using a pneumatic oil extractor. I extracted out the oil then pulled the drain plug. The results........Not a drop of oil came out.
I then poured the oil back in from my extractor to the engine and drained though the drain plug. I put the drain plug back in and fired up my extractor. All it did was gurgle sucked up a few drops of oil then just sucked air.
Bottom line, drain or suction, pick your favorite, they both get the same amount of oil out of the engine.
Stay tuned and I will add my oil change writeup to this thread.
I only did put in just shy of 8.25 quarts to fill exactly to the full mark on the dipstick. As Russell pointed out, you can't get absolutely all the oil out of the engine.
#30
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2002 C230K, 2013 BMW 328, 2015 BMW X5
The debate on drain vs. suction is over. I conducted Wingless's test. It was a PITA, but I wanted to know my self and help the community.
I just changed my oil and first started by pumping it out using a pneumatic oil extractor. I extracted out the oil then pulled the drain plug. The results........Not a drop of oil came out.
I then poured the oil back in from my extractor to the engine and drained though the drain plug. I put the drain plug back in and fired up my extractor. All it did was gurgle sucked up a few drops of oil then just sucked air.
Bottom line, drain or suction, pick your favorite, they both get the same amount of oil out of the engine.
Stay tuned and I will add my oil change writeup to this thread.
I only did put in just shy of 8.25 quarts to fill exactly to the full mark on the dipstick. As Russell pointed out, you can't get absolutely all the oil out of the engine.
I just changed my oil and first started by pumping it out using a pneumatic oil extractor. I extracted out the oil then pulled the drain plug. The results........Not a drop of oil came out.
I then poured the oil back in from my extractor to the engine and drained though the drain plug. I put the drain plug back in and fired up my extractor. All it did was gurgle sucked up a few drops of oil then just sucked air.
Bottom line, drain or suction, pick your favorite, they both get the same amount of oil out of the engine.
Stay tuned and I will add my oil change writeup to this thread.
I only did put in just shy of 8.25 quarts to fill exactly to the full mark on the dipstick. As Russell pointed out, you can't get absolutely all the oil out of the engine.
E
#32
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2007 C230SS; 2014 ML350 BT
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
I will admit that when doing the extraction method, you must have patience if you want to get all the oil out. I left it to do it's thing for about an hour. Then re pressurized it and pushed the tube down as tight as possible and held it for a few minutes until is started sucking air. That got out about another 1/2-3/4 quart.
![thumbs](https://mbworld.org/forums/images/smilies/thumbsup.gif)
![Stick Out Tongue](https://mbworld.org/forums/images/smilies/tongue.gif)
Last edited by johnand; 10-02-2007 at 04:18 PM. Reason: Replying to another quote
#33
I have always drained, but am now tempted to extract since it would be so much easier.
I realize the issue of adequately removing all the fluid is addressed here. May be other factors to consider - you would want to make absolutely sure that the tubing that you put down the filler tube is very clean, because there is a risk of contaminating your oil if its not perfectly clean (probably pretty easy to do this). But I also wonder if a drain is better at removing (or flushing) any solid particles that a suction may leave behind. The force of the fluid rapidly going out a drain should flush any particles that may be on the bottom of that oil pan. Just a thought....
I realize the issue of adequately removing all the fluid is addressed here. May be other factors to consider - you would want to make absolutely sure that the tubing that you put down the filler tube is very clean, because there is a risk of contaminating your oil if its not perfectly clean (probably pretty easy to do this). But I also wonder if a drain is better at removing (or flushing) any solid particles that a suction may leave behind. The force of the fluid rapidly going out a drain should flush any particles that may be on the bottom of that oil pan. Just a thought....
#35
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Debadged 6-Speed '05 C320 Sports Coupe
The debate on drain versus pump continues. It would be interesting if the benefits of one over the other would be satisfied by conducting a test.
#36
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08 CLS550 Diamond White 09upgrades
Can you suck something else.... hahaa
Okay; so Million Dollar ? is can I use this suction thing to suck out my transmission oil and refill it? understand that the tranny filter needs to be change as well but for sake of argument (changing tranny every 30,000 miles or so) can this be done?
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#38
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No dipstick, and the oil should be extracted out of the tube. The 240, 280, 320, & 350 are all variations on the same theme. Removing the drain plug requires changing the crush washer. The thread on the drain plug is an interference fit. This design allows the plug to seal better. Taking the plug in and out lessens the interference fit, making the car more prone to leaking oil.
#39
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
...
No dipstick, and the oil should be extracted out of the tube. The 240, 280, 320, & 350 are all variations on the same theme. Removing the drain plug requires changing the crush washer. The thread on the drain plug is an interference fit. This design allows the plug to seal better. Taking the plug in and out lessens the interference fit, making the car more prone to leaking oil.
i initially thought that NO dipstick = NO tube. i just recently ordered one of the oil extractors and was worrying if i would be able to use it on my c320 or not. I havent actually lifted up the hood and looked but from what ive searched and read it should be pretty much the same procedure as written in this write up.
#40
![Talking](https://mbworld.org/forums/images/icons/icon10.gif)
Thanks Drop-a-Daimler! I was a little scared to try this myself, but figured what the heck. I bought an Ball shaped, 6.5 Qt extracter at Pep Boys for $69.99, filter from the dealer for $21.00, 8 Qts of Mobil 1 0W40 and a 76mm Oil Filter Wrench. I have a 2003 C320 so my filter must be bigger.
I took my time, so it took me about 45 mins, but was as smooth as silk. I kept pumping out oil until I filled it once, dumped that and went back to pumping. I pumped until the slurping sound started and pumped some more.
Then replaced the oil filter and the 4 O-rings (some people said 3, but mine had 4 and the filter came with them).
One tip that I can give to avoid over filling is: I put in 6 Qts, then got in the car and did the oil check. It said to add 1.5 Qts, so I added exactly that much and checked again. I got the "Level Ok!". I think it even seems to run better!
This board and You People are Awesome!
Thanks!
I took my time, so it took me about 45 mins, but was as smooth as silk. I kept pumping out oil until I filled it once, dumped that and went back to pumping. I pumped until the slurping sound started and pumped some more.
![Stick Out Tongue](https://mbworld.org/forums/images/smilies/tongue.gif)
One tip that I can give to avoid over filling is: I put in 6 Qts, then got in the car and did the oil check. It said to add 1.5 Qts, so I added exactly that much and checked again. I got the "Level Ok!". I think it even seems to run better!
This board and You People are Awesome!
Thanks!
#41
Super Member
Would it make any sense to pour in a litre or two of new oil after you've drained the entire engine, then pump out the 2 litres that you just put in, before filling again with a fresh 7-8 lites?
A way of "flushing" the dirty oil off of internal engine parts from the top down? I would pour in thru the oil filter reservoir and also where the oil filler cap is located.
Anyone OCD like me with this?
A way of "flushing" the dirty oil off of internal engine parts from the top down? I would pour in thru the oil filter reservoir and also where the oil filler cap is located.
Anyone OCD like me with this?
#42
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2001 c320 - 2002 ml55 - 2011 c300 - 2014 slk350 - 2015 cla45
so i changed the oil on 2 both of my 320's....
purchased the extractor on amazon... and the filter tool cap from autozone
for my C.... the h-n-r filter cost me like 18 bucks on ebay. i put 10w30 high mileage mobile-1 and it cost me approx $50 bucks with tax ($25/5 quart)
the c used about 1.5 bottles..... so all in all for just the oil and filter..
$23 (1 bottle)
$12.5 (1/2 bottle)
$18 (filter)
------------
$53.5
occasionally i get my oil changed at one of the local dealers for 19 bucks ( regularly 59.99). I also just received a coupon from another local dealer for 39. bucks (regularly 89.99).
so in reality im only saving approx 7-8 bucks if i take it to the first dealer and paying full price (assuming that the SA doesnt talk me into fixing something that may not need fixing.)
this may sound awful..... but my time is worth more than saving the 7-8 bucks. it was nice to actually do it myself but the hassle of purchasing the oil, pouring the old oil back in the bottle, taking the old oil back to auto shop for recycling, ordering the filter, then cleaning up after making a mess isnt really worth the 7-8 bucks.
The tIme i spent doing it myself... including going to the store twice.... and actually changing the oil took me approx 1 hour. At the dealer the oil change takes about 1/2 an hour. And during this time i can read something or catch up on some much needed ZZZ's in the nice waiting area.
Regardless of what i typed above.... i will probably change my own oil in between scheduled visits, 5000 miles without changing the filter....
This DIY is great.... and it would be really worth it for you MB owners that have dealers that charge an arm and a leg to change your oil. It is very easy to do. Im moving to the detroit area in june and i hope to find a dealer up there that charges 59 bucks or so...... if not ill most likely be doing the oil changes myself... an hour of my time is definately worth saving 30-40 bucks vs 7-8..
-carino
purchased the extractor on amazon... and the filter tool cap from autozone
for my C.... the h-n-r filter cost me like 18 bucks on ebay. i put 10w30 high mileage mobile-1 and it cost me approx $50 bucks with tax ($25/5 quart)
the c used about 1.5 bottles..... so all in all for just the oil and filter..
$23 (1 bottle)
$12.5 (1/2 bottle)
$18 (filter)
------------
$53.5
occasionally i get my oil changed at one of the local dealers for 19 bucks ( regularly 59.99). I also just received a coupon from another local dealer for 39. bucks (regularly 89.99).
so in reality im only saving approx 7-8 bucks if i take it to the first dealer and paying full price (assuming that the SA doesnt talk me into fixing something that may not need fixing.)
this may sound awful..... but my time is worth more than saving the 7-8 bucks. it was nice to actually do it myself but the hassle of purchasing the oil, pouring the old oil back in the bottle, taking the old oil back to auto shop for recycling, ordering the filter, then cleaning up after making a mess isnt really worth the 7-8 bucks.
The tIme i spent doing it myself... including going to the store twice.... and actually changing the oil took me approx 1 hour. At the dealer the oil change takes about 1/2 an hour. And during this time i can read something or catch up on some much needed ZZZ's in the nice waiting area.
Regardless of what i typed above.... i will probably change my own oil in between scheduled visits, 5000 miles without changing the filter....
This DIY is great.... and it would be really worth it for you MB owners that have dealers that charge an arm and a leg to change your oil. It is very easy to do. Im moving to the detroit area in june and i hope to find a dealer up there that charges 59 bucks or so...... if not ill most likely be doing the oil changes myself... an hour of my time is definately worth saving 30-40 bucks vs 7-8..
-carino
#43
just got done with oil change
I just changed my oil but spilled a couple of drops on the belt, so when I restarted the engine, there was a loud squeeking noise that was getting louder and louder. I fugured that the oil got to the belt and pullies, that the pullies were slipping and making the noise. Ran to Walmart and got some belt dressing and sprayed the heck off the belts and pullies, squeek gone.
Oil change was harder than I thought since my oil cap wrench was not perfect size, next time I'm using an oil pump!
Oil change was harder than I thought since my oil cap wrench was not perfect size, next time I'm using an oil pump!
#45
Oil Filter Wrench Size?
Really great write-up. I going to be performing a Service B on my 06' C280 in a matter of days.
One thing I can't figure out -- what's the size of Oil Filter Cup Wrench needed?
One thing I can't figure out -- what's the size of Oil Filter Cup Wrench needed?
#48
Super Member
How many times do you need to pump the extractor to get the oil out?
Something might be wrong with mine as after about getting 5 litres out, I basically had to manually pump out the remaining three litres. I tried adjusting the tube to ensure that it was pushed down as far as possible.
Is this normal?
Something might be wrong with mine as after about getting 5 litres out, I basically had to manually pump out the remaining three litres. I tried adjusting the tube to ensure that it was pushed down as far as possible.
Is this normal?