Oil / Fluid Extractor : Large livestock feeding ...

[odie]

syringe , attach a clear plastic hose and secure with packing / duct tape or zip tie . For length , push hose down dipstick oil tube until hits bottom . Then mark few inches or more above tube opening and cut with scissors / razor blade knife . Use this for small engines .

 

[Rand]

or get one of these for $20?

 

[kc8adu]

Originally Posted by odie
syringe , attach a clear plastic hose and secure with packing / duct tape or zip tie . For length , push hose down dipstick oil tube until hits bottom . Then mark few inches or more above tube opening and cut with scissors / razor blade knife . Use this for small engines .

also good for semi sealed batteries like the east penn flat top.
makes it easy to add water once the plugs are out.

 

[odie]

Nice . Like it clear to read ounces removed .

 

[UncleDave]

Originally Posted by odie
Nice . Like it clear to read ounces removed .


Except it won't work well at all, anyone thats ever used a plunger based extractor will tell you this.

Plunger based extraction devices aren't 1-1 in terms of plunger movement vs liquid accumulated -especially with something thick like oil

You've got to fill the line with fluid which to start with is filled with air that is easily compressed before even a drop makes its way to the graduated cylinder.

That plunger will be all the way back before the first drop of material makes it to the cylinder unless the line is impossibly short - that bundle in the pict won't work at all.

UD

 

[odie]

Have been using this method on small engines with no problem .

 

[WyrTwister]

https://www.harborfreight.com/multi-use-transfer-pump-63144.html

 

[Mazomopar]

Wyr hit the nail on the head. That pump from harbor freight does a transmission drain on my geo tracker in 10 minutes. Find some smaller vacuum tubing so it won't collapse and measure it against the dipstick and add a little more and down the tube she goes. 15-20 pumps later it's ready to refill. KISS theory for me.

 

[CR94]

Originally Posted by UncleDave
... That plunger will be all the way back before the first drop of material makes it to the cylinder unless the line is impossibly short -...
No it won't, unless the line is impractically fat or long. Of course you'll get some air on the first pull, but not much on later ones if you evict the air before the oil.

Long ago, my father used an all-steel livestock syringe to empty the oil filter cartridge housing on the '54 Chevy. It worked well. On a typical modern plastic syringe not intended for oil, the syringe body, the piston, or the rubber piston rings might be chemically incompatible with oil.