that's definitely what gun wash is and cheap thinners was talking to the paint supplier at a show about itIt's probably recycled thinners, so as said its low quality.
It may well have been Tetrosly thinners or gunwash that leaked on me. I was painting some thing and the thinners[gunwash] can was atWill rot the tin as well
i have a tin of it just for thinning machinery paints and cleaning guns and paintbrushes. after a few month of been open its gone yellow as said the water in it rots the tinBuy some standard thinners as well to clean the yellow stains it leaves behind.
I do for a fiver a gallon or 16 quid for 5 gallonsRegarding the tetrosyl stuff, I've been using it for the last couple of years as a gun wash and it has worked like it says on the tin, no leaks, no yellow stains so no problem.
I would buy it again.