Review on 🌪 Robinair 15510 VacuMaster Single Stage Vacuum Pump - 5 CFM, Single-Stage by Mike Cody

Three weeks after using it, smoke is now coming out of the unit's exhaust cap. There are times when the vacuum draw is below acceptable and I need to warm up my Kydex (I make holsters and other items) and try to recover it. When it works it pulls a decent vacuum, I don't have a sensor so I can't tell the exact drop in performance but it's noticeable. I've tried changing the oil without increasing performance. A normal unit for my work and what I could afford at the time.