Review on 🔧 Mastercool 82375 R134A Oil Injector: Essential Silver Accessory for Seamless AC Maintenance by John Roby

Lid thread stuck before I used it. Opened, oil chamber blown out with brake cleaner and a rag to remove aluminum shavings, cap screwed on tight but tight. I did a vacuum test to make sure it wasn't leaking and couldn't get the cap off. I clamped it in a vise and tried to remove the cover, but I didn't budge. If you're brave enough to try this, make sure you clean the chamber well and know that the inlet is 1/2" female Acme and the outlet is 1/2" male Acme , and be very light when unscrewing the cap. on the.