Oil extraction, need help!
Thread Starter
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
Oil extraction, need help!
I have been using oil extractor for the past 15 years with no issues with different make of cars. Today when I tried it with my E400, there was a problem. I pushed the extractor tube into the dipstick as usual, reached the bottom, I started my extractor, only about 2 quarts came out (should be 6.9). Tried to push in deeper and after wiggle the tube, the tube did go in a few more inches. However, no suction whatsoever! After tried it for some time, a few more quarts came out, about 4 quarts total. No matter what I did, no more oil. So temporary measure, I topped it up.
Anyone, who has done the extraction, can shed a light? Thanks.
Anyone, who has done the extraction, can shed a light? Thanks.
Member
Joined: Jul 2017
Posts: 102
Likes: 13
From: Phoenix, AZ
2013 SL550
I've been extracting oil for about 15 years too. I use a Mityvac 7400. Here are my thoughts on your situation.
Have you used the same extractor for those 15 years? If so, it may be time for a new one. If the tubes are reaching the oil, the tubes are clear and the pump is working, oil should be coming out. Of course, maybe the quantity of oil was much less than you think and you got all that there was. What does the dipstick indicate? Good luck.
Have you used the same extractor for those 15 years? If so, it may be time for a new one. If the tubes are reaching the oil, the tubes are clear and the pump is working, oil should be coming out. Of course, maybe the quantity of oil was much less than you think and you got all that there was. What does the dipstick indicate? Good luck.
Thread Starter
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
Thread Starter
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
I've been extracting oil for about 15 years too. I use a Mityvac 7400. Here are my thoughts on your situation.
Have you used the same extractor for those 15 years? If so, it may be time for a new one. If the tubes are reaching the oil, the tubes are clear and the pump is working, oil should be coming out. Of course, maybe the quantity of oil was much less than you think and you got all that there was. What does the dipstick indicate? Good luck.
Have you used the same extractor for those 15 years? If so, it may be time for a new one. If the tubes are reaching the oil, the tubes are clear and the pump is working, oil should be coming out. Of course, maybe the quantity of oil was much less than you think and you got all that there was. What does the dipstick indicate? Good luck.
Member
Joined: Feb 2013
Posts: 207
Likes: 37
From: Beaverdam, VA
W123 300CD, R107 560SL, W211 E320
Oil extraction technique
All Mercedes engines are designed for vacuum oil extraction. The dipstick tube itself extends to the lowest point in the engine sump. The proper method is to attach your extractor tubing to the TOP of the dipstick tube. Inserting a separate, small diameter plastic tube through the dipstick tube is defeating that feature. At best, it will slow the extraction process because the tube is smaller and at worst it will not allow the tube to reach the lowest point in the sump.
Fashion a fitting that will clamp over the upper end of your dipstick tube and all your problems will be solved. That is the way the dealers do it and the way I have always done it on my 1983 300CD and my 2008 E320 Bluetec. I too use the MityVac extractor. BTW, loosen your oil filter cap first so it can drain into the sump and you will get that oil also.
Fashion a fitting that will clamp over the upper end of your dipstick tube and all your problems will be solved. That is the way the dealers do it and the way I have always done it on my 1983 300CD and my 2008 E320 Bluetec. I too use the MityVac extractor. BTW, loosen your oil filter cap first so it can drain into the sump and you will get that oil also.
Thread Starter
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
All Mercedes engines are designed for vacuum oil extraction. The dipstick tube itself extends to the lowest point in the engine sump. The proper method is to attach your extractor tubing to the TOP of the dipstick tube. Inserting a separate, small diameter plastic tube through the dipstick tube is defeating that feature. At best, it will slow the extraction process because the tube is smaller and at worst it will not allow the tube to reach the lowest point in the sump.
Fashion a fitting that will clamp over the upper end of your dipstick tube and all your problems will be solved. That is the way the dealers do it and the way I have always done it on my 1983 300CD and my 2008 E320 Bluetec. I too use the MityVac extractor. BTW, loosen your oil filter cap first so it can drain into the sump and you will get that oil also.
Fashion a fitting that will clamp over the upper end of your dipstick tube and all your problems will be solved. That is the way the dealers do it and the way I have always done it on my 1983 300CD and my 2008 E320 Bluetec. I too use the MityVac extractor. BTW, loosen your oil filter cap first so it can drain into the sump and you will get that oil also.
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Member
Joined: Feb 2013
Posts: 207
Likes: 37
From: Beaverdam, VA
W123 300CD, R107 560SL, W211 E320
I found an aluminum nipple with an o-ring that works. Don't know what it really is. Fits nicely into the dipstick tube. I think you can easily make something up out of rubber/plastic tubing and worm clamps. It would be equally as effective clamping and sealing to the outside of the dipstick tube.
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Thread Starter
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
I found an aluminum nipple with an o-ring that works. Don't know what it really is. Fits nicely into the dipstick tube. I think you can easily make something up out of rubber/plastic tubing and worm clamps. It would be equally as effective clamping and sealing to the outside of the dipstick tube.
