simple goo question...

Wife is having a garage sale.... in digging out stuff I found an older lava globe.. very low on fluid.. misssing its SCREW OFF lid. Now.. once I find a cap I can screw on... can I go the distilled water and goo kit surfactant route to make it run. Or do I have to use their goo for proper flow? Have no idea where I got this thing... and really I shouldn't be even trying since most of my inventory is on sale in the garage.... but, I just like to tinker. I'm still pouting about selling my FF #4 and Giant Sized X Men #1...... crown jewels of my meager comic collection.... ah well........... getting old is a *****.

thanks.....