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Homemade Oil Extractor #4476775
08/01/17 05:23 PM
08/01/17 05:23 PM
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
Kira Offline OP
Kira  Offline OP
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
I rigged an oil extractor from an old chemistry lab vacuum pump, a 5 gallon pail with a gasketed lid and suitable lengths of hose. One hose connected the pump's suction port to the pail and the other was a length of 1/4" hose which reached down the dipstick tube.

It ran slowly and when I closed the throttling orifice to increase the suction, the sides of the pail collapsed so I know the system was quite free of air leakage.
15 torturous minutes of extraction yielded barely a pint (16 oz.) of oil. I was stumped.

The oil I had collected resembled semi-dissolved jam. 'Twas all shifty and wavy, not like plain, familiar oil sloshing in the bottom of a pail.
I had a heart attack.

Pulling the drain plug saw the oil drain normally.
The pail I had used for my extractor was clean. It had been 1/4 full of floor cleaner but rinsed out perfectly.

I must try this extractor again as I need it for another car. This was an experimental run.

Perhaps the 1/16" inner diameter is simply not big enough for effective oil suction.
Maybe a thinner walled 1/4" tube would work better.

I'm still wondering about the appearance of the "drawn pint" because it was from a dealership's oil change.
They used a Volvo filter alright but heaven only knows what kind of oil. Some kind of "motor honey" quieting agent came to mind.

Re: Homemade Oil Extractor [Re: Kira] #4476776
08/01/17 05:25 PM
08/01/17 05:25 PM
Joined: Jul 2005
Posts: 30,964
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,964
NY
Pics of the extractor???? wink


God Bless Our Troops

Re: Homemade Oil Extractor [Re: Kira] #4476823
08/01/17 05:52 PM
08/01/17 05:52 PM
Joined: Sep 2009
Posts: 2,167
Deep in the heart of Jersey
BigCahuna Offline
BigCahuna  Offline
Joined: Sep 2009
Posts: 2,167
Deep in the heart of Jersey
I have a vacuum extractor that was designed for boats. It's a metal 2 gallon can, with one hose. There's a pump that attaches to one of the holes in the can. After about 20-30 pumps, you release the squeeze clip on the hose that stuck down the dipstick, and the oil gets sucked out. Your setup should work the same way as long as the hose doesn't touch or get stuck to the bottom of the oil pan.,,

Re: Homemade Oil Extractor [Re: Kira] #4476852
08/01/17 06:27 PM
08/01/17 06:27 PM
Joined: Feb 2013
Posts: 1,111
Prospect, KY
spk2000 Offline
spk2000  Offline
Joined: Feb 2013
Posts: 1,111
Prospect, KY
My extractor uses a hard wall type of tubing so the tubing wall doesn't collapse under vacuum. also makes a big difference if the oil is slightly warm vs cold. Also if it is too hot of oil the larger tube connecting the hard tube will collapse and you get next to nothing then.


96 Grand Marquis
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Re: Homemade Oil Extractor [Re: Kira] #4476893
08/01/17 07:01 PM
08/01/17 07:01 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
The oil tube for suction on my medical evacuator is 3/16s and warm oil is rapidly sucked out of sumps on small engines, brake reservoirs and the like.



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Re: Homemade Oil Extractor [Re: Kira] #4476942
08/01/17 07:48 PM
08/01/17 07:48 PM
Joined: Sep 2014
Posts: 1,487
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,487
Toronto Canada
1/16th inch for the extractor tube is waaayyyy to small.

Re: Homemade Oil Extractor [Re: Kira] #4476950
08/01/17 08:01 PM
08/01/17 08:01 PM
Joined: Apr 2007
Posts: 2,992
WI.
dblshock Offline
dblshock  Offline
Joined: Apr 2007
Posts: 2,992
WI.
get the oil hot..My Honda oil tube wont accept a 1/4" suction tube so I went to the hardware store and found a 5/32" brass pipe that I then elongated to fit, it works but needs hot oil.


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Re: Homemade Oil Extractor [Re: Kira] #4477074
08/01/17 11:55 PM
08/01/17 11:55 PM
Joined: Dec 2008
Posts: 2,407
CA
raytseng Offline
raytseng  Offline
Joined: Dec 2008
Posts: 2,407
CA
if you can clean up. try your device on water first. if it can't even suck up water then you've got an issue.

all extrwctors use a ridgid container. if your pail is collapsing i dont think its adequate for this job

Re: Homemade Oil Extractor [Re: demarpaint] #4477112
08/02/17 04:56 AM
08/02/17 04:56 AM
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
Kira Offline OP
Kira  Offline OP
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
I'd like to but no website accepts pictures from my computer

Re: Homemade Oil Extractor [Re: Kira] #4477266
08/02/17 08:48 AM
08/02/17 08:48 AM
Joined: Oct 2010
Posts: 141
TN
terry274 Offline
terry274  Offline
Joined: Oct 2010
Posts: 141
TN





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