Well it's common practice there and years ago it was real potent stuff and stunk the joint out for weeks.... Must have been when we were poaching fish from someone's else's territorial waters. Anyhow not so strong now but still works well its very thin and gets in everywhere. I used it on my 4x4 and had it weaping out of spot welds for months after every time I dove on off road tracks. I had one little surface rust spot near my drives side mirror which I dabbed a bit of oil on and in 10 years of living on the coast and fishing every weekend it didnt change one bit. So I think it's the best stuff going for prevention .... It would be the final thing you would do before closing everything up. I need some for the dart but going on these responses maybe its not available here