A machine needs to have fuel piped to various locations, and the pipes need to be flexible, so there’s a risk of ruptures.
Fuel line pressure loss would make the whole machine malfunction, and the leaking fluids would be a problem too.
So, they add a sealant to the fuel, making the leaking fluid gunk up when in contact with air, stoppering the rupture point… in theory.
How’s it going to work in practice?
