Kozyvacu AUTO AC Repair Complete Tool Kit with 1-Stage 3.5 CFM Vacuum Pump, Manifold Gauge Set, Hoses and its Acccessories KZTA350001 TA350 1

I had no issues with the pump. It sucked my honda civic system down to-30 very quickly. Ran pump for almost 1 hour straight with no overheating or cutting out. I will say it was 50 degrees outside when I used it. Pump makes some strange sounds when running however it did a great job. After 10 minutes or so the pump was not putting out any mist. The way I understand the manual once mist stops them moisture should be out of the system. The oil that's included was a little more than needed to fill the pump so I have extra if ever needed. Good pump for the occasional users.

This vacuum pump is well built and heavier than I expected. Exceptional quality build. I used it to vacuum my auto AC and it went to about 27 mg in less than 2 minutes. If left for a half and hour it goes down to about 29.5 mg, provided you don't have any air leaks. Its very sturdy and performs exceptionally well. Less noisy than I expected.

I'm happy with this pump after using it twice. I filled the oil half way between the marks, and ran it for over an hour under slight load to break it in, first. (This might not be necessary at all.) It holds vacuum just fine. **It comes with oil in a sealed bottle. After filling up the oil reservoir, you'll have extra leftover. The pump is still working after doing several A/C jobs. **I believe that the pump and other AC vacuum pumps use mineral oil for lubrication. Take opinions on here with a grain of salt!

The pump arrived on time, and as usual was well packaged. It has only been able to pull my empty vacuum chamber down to -25.5 Hg, but that may be due to my lid seal. I plan to change out the lid seal and retest the vacuum pump. The pump looks good and quieter than I expected. When running, it does produce a very fine mist from the exhaust/oil fill port. I’m told this is completely normal. I’ll post a more in-depth review once I change the lid gasket on my chamber and do a few stabilizing batches. This will be the more in-depth review of the Kozyvacu TA350 after using it numerous times. I have been using it to pull vacuum in a 4”x12” clear PVC vacuum chamber that I built for wood stabilization. During my first runs, I thought this pump may not be able to do the job as effectively as I had hoped. I’m happy to report that is not the case. I’m not sure if it was the crazy Oklahoma weather conditions, the refinements I made to my chamber, or a combination of those, but I’m now able to pull vacuum down to -30 Hg, which is what I’m told is nearly perfect vacuum for the wood stabilization process. Not only does this little vacuum pump seem to be operating better with time, the fine mist I mentioned has stopped. All in all, I’m very pleased with this purchase, and would not hesitate to buy this same pump again. For less than 60 bucks, delivered to your door in a couple of days, this vacuum pump is the “Deal of the day” for anyone like myself who would rather build their stabilization system than buy a complete setup.

Quite happy here. As others mentioned, this comes with oil. If you fill it mid-way, there's maybe 1/3 of a bottle left over, so you're good for several uses! It pumped my mini-split 16 ft lines down to well below -30, worked great. NOTE: I have no idea of long-term use, I've only used it once.