Leak detection "spray"?
I have been leak checking my bus and "thinK" that I have it pretty solid where I have done new metal work.
I want to be as certain as I can that I have no leaks before I start covering things up.
That got me thinking about a product that I saw in the marine industry years ago.
It was a rattle can spray that went on blue and would turn pink/red if water came in contact with it. Great for finding obscure leaks.
I can't remember what it was called and my Google-Foo is failing me.....
Can anyone point me towards a comparable product?