I was recently at Harbor Freight. For those who asked about it. This is what I use to suck the oil out of my S/C snout..see attached.
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get 3 feet of clear vinyl thin tube from lowes...
Stick her in there, suck up about 2 ft worth, and then drop the end down to siphon the rest out...
less than a dollar
I winz
I borrowed a 60cc syringe from the vet when i worked there and some IV tubing and it does the job.