hi folks, i put a couple of hose barbs into a 2 gallon paint bucket with the intention of using my mityvac to extract the engine oil from the dipstick tube. turned out that there was some air leak in the bucket and i couldn't make enough vacuum to get more than a few drops of oil out. what kind of container do you all use for the job, and did you use screw-tight bulkhead fittings or were rubber grommets around the barb fittings sufficient?

(edit: i'm confused because i can't find the air leak, so interested in starting over with a container that is known to work.)

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'77 240D, 504H, OM617.952, etc.