I did a search to see if this has come up before didnt see it so I'll share a trick a old timer showed me when I couldn't find a slow leak on a air break system.
95% of the time you can find a air leak by ear or using soapy water. But on slow air leaks soapy water can fail you when this trick saves tons of time. Add Vegetable glycerin to your soapy water, it gives a lot more film strength to the liquid and shows bubbles far easier. It's like 3 bucks at your local store. High time saver
Example
Heavy soap and water
Soap water with vegetable glycerin
Hope this helps someone in the future!
95% of the time you can find a air leak by ear or using soapy water. But on slow air leaks soapy water can fail you when this trick saves tons of time. Add Vegetable glycerin to your soapy water, it gives a lot more film strength to the liquid and shows bubbles far easier. It's like 3 bucks at your local store. High time saver
Example
Heavy soap and water
Soap water with vegetable glycerin
Hope this helps someone in the future!