mahmoudim

Hello everyone. What is your opinion on changing motor oil by draining it vs. extracting it through the dipstick tube? Thanks

BlownV8

I do the extraction method. Quick, safe, and very little mess.

mahmoudim

2 questions:
Do you have any suggestions on what type of extractor I should use?
how far the tube should be inserted in the dipstick tube?
thank you

threeMBs

Including GL63?

BlownV8

Yes, did the 63 this weekend.

BlownV8

I have a manual version and one that runs off my compressor. Think I used the manual version only once. Highly recommend you get one that runs off a compressor. This is the one I have AmazonSmile: Mityvac Fluid Evacuator/Brake Bleeder, Pneumatic : Automotive

threeMBs

The reason I asked is that WIS specifically for 63's M157 engine specifies drain only. Most with 63s (those with W212 and some others) drain.
I also extract my 63 and it seems that all oil is extracted. Good to know someone else has no issues with extracting all oil from M157 63.

chassis

I drain the M276 although WIS calls for extraction. My former dealer bottom drained my oil. Draining must have been more productive for them within their own standard process, WIS notwithstanding.

The engine doesn’t know and doesn’t care. Use the process that suits you best.

arsupisemnet

The only reason for extraction - don't have to lift car. Otherwise you would want to drain oil rather than extract - to drain sludge on the bottom of the oil pan.

chassis

I bottom drain and don't lift the vehicle. It is a pain, however, to remove the underbelly shield - by far the most time and effort intensive step of the oil change.

maneesh

I first did an extraction using a fluid transfer pump - took forever b/c of the pump but I mainly did this b/c I was not able to go under the truck. Subsequent oil changes have been done by draining. I prefer draining b/c it allows me to check for leaks or anything else.

here's my video on a drain:


here's my vide on an extraction:

primbesy

Thanks for the videos. I raise the vehicle via air suspension and drain it. Invested into one of those magnetic pan drain plugs, so do the oil changes every 5-6K miles.

BlownV8

Every 5k to 6k miles may be pushing it on a 350. You should probably do every 4k to 5k miles to avoid engine sludging.

primbesy

Yep. That’s the goal - right at 5K. Let me ask you this, have you found that using the MB branded 229.52 or Ravenol 229.52 makes a difference in preventing sludging? Most US based MB dealers use 229.51 spec oil and I was curious as to that level of detail as a DIYer.

BlownV8

Your best bet is to post your diesel question in the diesel forum. Diesel Forum - MBWorld.org Forums

arsupisemnet

Best oil for OM642 and any other diesel so far Mobil Delvac 1 ESP.
Rotella is crap so any other oil.

mahmoudim

So, I went ahead with the extraction method and here’s what I observed. Please note that I will not mention some of the obvious steps, such as the need to run the car to warm up the oil, loosen the oil filter cap, etc…
I used an extraction tool which came with a pneumatic pump. I set the air pressure at the higher end of the recommended setting for the tool so I can create a stronger suction. This way I was able to throttle the Venturi with its manual valve. I inserted the plastic tube, which came with the extraction tool, 10-12 cm beyond where the dipstick ends. More on this later. Once all the plastic tubes where connected, I started to run the pneumatic pump and it took about 5 minutes to pull out about 8 litters of oil. At that point, I started to lower the plastic tube by another 3-4 cm. This caused more oil to be pulled out. I played around with the depth of the tub inside the oil pan for another 2-3 minutes. After 10 minutes in total, I had 8.5 litters of oil, about 9 quarts. I didn’t notice any sludge or particulates. In summary, I found this to be a very effective and quick method to change the oil. If you have any question about the process or need more explanation about any one of the steps, please reach out. I can also let you know what tools I used.

mahmoudim

So, I went ahead with the extraction method and here’s what I observed. Please note that I will not mention some of the obvious steps, such as the need to run the car to warm up the oil, loosen the oil filter cap, etc…
I used an extraction tool which came with a pneumatic pump. I set the air pressure at the higher end of the recommended setting for the tool so I can create a stronger suction. This way I was able to throttle the Venturi with its manual valve. I inserted the plastic tube, which came with the extraction tool, 10-12 cm beyond where the dipstick ends. More on this later. Once all the plastic tubes where connected, I started to run the pneumatic pump and it took about 5 minutes to pull out about 8 litters of oil. At that point, I started to lower the plastic tube by another 3-4 cm. This caused more oil to be pulled out. I played around with the depth of the tub inside the oil pan for another 2-3 minutes. After 10 minutes in total, I had 8.5 litters of oil, about 9 quarts. I didn’t notice any sludge or particulates. In summary, I found this to be a very effective and quick method to change the oil. If you have any question about the process or need more explanation about any one of the steps, please reach out. I can also let you know what tools I used.
‘BTW, I drive a 2013 GL450.