TKM Tools Oil Sampling Pump - Made in USA - Oil Analysis Sampling Pump with Vacuum Release Valve - Works with 5/16-inch Hose, 1/4-inch Hose (Most commonly Used) and 3/16-inch Hose

Works good easy to use it's a good quality unit.

I needed a good quality pump for taking fluid samples from the generators I work on. Works extremely well and the vacuum release button is a definite plus.

Great for oil sampling! I also used it for flushing my power steering system out with fresh fluid. Hooked it up to the return line and pulled fresh fluid from the reservoir. Worked great !!

Because oil is thick pull handle slowly or it will break. Works well if you do multiple pulls

Good packaging, quality product, as described will accept multiple size hose. Works very well. Makes taking samples extremely easy and clean. So if you are tracking the wear on your engine or monitor the transmission or coolant this makes it so much easier to obtain samples. The release button allows you to exactly control the sample size and stop the flow when you want. Very sturdy build quality. Think it will last for many years.