pumping oil out

[Koogie]

I'm not sure if this is the correct forum but here goes, has anyone used the pump that you stick a hose? into the dipstick too pump the oil out, instead of draining the oil out? If so, is it worth it? Thanks.

 

[higney85]

im guessing you are talking about an engine.. i have never heard of this... ever... but for an auto tranny where you would have to drop the pan to flush the system i gues you could rig something up but then again you can drain at the cooler.. so i will stick with never hearing about it or understanding why you want to do it this way. You can drain from the plug and if you overfill you can drain from the oil filter on some cars or just pull the plug out for a couple seconds.

 

[TurboFrog]

Many marine engines don't have drain plug. Usually, oil is sucked through distick tube. Personally, I don't own a boat so I can't comment on those oil change systems. I do think that it would be a good way to get oil sample during winter time.
Check out some of oil change systems at http://www.boatus-store.com/browse/category/default.asp?IID=1708

 

[digitaldrifter91]

well its nice to pump out and have no mess but what about the crap that settled to the bottom of the pan....i doubt a vacumn can get all that out...i stick with normal

 

[OneQuartLow]

Certainly, pumps make sense anytime the sump is hidden in the bowels of a structure or vehicle without an accessible drain plug. If there's an accessible drain plug I would say a pump is creating more work than it saves.

The only time I know of for a pump system to reduce the effort or mess is if you're doing this in a production setting and don't have to clean up the pump/hose setup between jobs. Otherwise it multiplies the number of items touching and drooling fluid around the shop. Drifter's point is valid in that it doesn't generally remove as much of the worst contaminants as does a gravity drain.

David

 

[dickwells]

I have a vacuum pump-up pump that I got from Griots. I have used it to give a transmission a fluid change and also on some of my older cars in the nasty part of the winter. I am sure that it is not as good as a drain plug drain but its better than waiting. The oil comes out fairly fast if it is halfway warm ahead of time.

 

[TheLoneRanger]

I also have a Griots vacuum pump. Those things are really handy. I use mine to suck out the ATF before a pan drop, and also to exchange power steering fluid.

An oil drain valve is much more convenient for crankcase oil changes, though. I don't think the suction pump would get all of the oil out.

 

[Steve_RI]

I've seen this mentioned in the VW forums (Vortex and clubb5). Because the oil and filter change (on the Passat anyway) requires you remove an underbelly, some people can't be bothered and use this device.

 

[NThomas]

My sister said that one lube place in her city put a different drain plug on her car and they just plug something in it, and it sucks it out.
have not checked this out at all, so i cant say

I do have one for mowers, etc. that i stick a hose down the dip stick pipe and connect the air hose and it sucks out the oil

 

[Ken2]

quote:

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Originally posted by TurboFrog:
Many marine engines don't have drain plug. Usually, oil is sucked through distick tube. Personally, I don't own a boat so I can't comment on those oil change systems. I do think that it would be a good way to get oil sample during winter time.
Check out some of oil change systems at http://www.boatus-store.com/browse/category/default.asp?IID=1708

---

Part of the conversion package for those engines is a dipstick tube that goes to the bottom of the sump just for this purpose.


Ken

 

[widman]

There are pumps for doing oil changes. Hook to an air compressor and create a vacuum to suck it out. I have a catalog I was studying when I was going do do a mobil oil change business where it would offer an alternative to getting under the car. I have reservations about how much crud it leaves behind. At least with this type of system, the oil can only be sucked out when it is hot (thin), as cold oil will not go up the tube very well. This helps insure that the crud is mixed in.