That reminds me of my constant engine coolant lost for ten years.
The leak was very slow and I would just fill coolant tank every 6 months to its cool
level.
Well we found the leak last spring when we had to remount the exhaust manifold because of blown seal and rusty mounting studs.
Out of eight studs to mount the manifold only one turned out easily and that had the coolant leak all other studs had to be drilled out and re-tapped.
With the stud out coolant just squirted out at you.
Glad they found the problem for you like my leak never saw a drip because hot engine just dried the leak up.
Safe travels Renden.