TSI Supercool V128-4CP Super Premium Synthetic Vacuum Pump Oil - 1 gallon, 4 Pack

Used this to fix the problem with our pool. Worked great! Would buy again!

Used product in between shipments of oil as only available. Vacums wouldn't pull near half vacum as normal. Mastercool 6cfm deep cycle would not even start up to start a vacum seal the oil just does not have the viscosity needed to lubricate the motor. Stay away. I luckily drained flushed and re filled with inland 19 and my pumps both mastercool and harvest pro rv-2 lab pump are back pulling Max vac stronger than ever. Please stay away for your pumps sake, project and mind!

This looks and feels like high quality oil. However after a cleaning cycle my vacuum pump will not work, and this was the only different thing. I have yet to identify if it was the oil or not, so I am listing it as average.I am trying to get to 500 mTorr or below and am not able to consistently achieve it.Update: After replacing with JB Black Gold vacuum pump oil my machine got to the proper vacuum within ten minutes, where using this oil caused the proper level to never be reached, and it took 45 minutes to reach 1400 mTorr.Since this was the only change I know for a fact it was this oil. Waste of money, buy another brand.