It's good to get so many opinions on a product from different perspectives, I'm think it was intially designed for the aeronautical industry,especially on large amounts of electrical harnesses. I have found it best used in small amounts with a cloth around the engine area and all visible wires, I have found it usually stays on for a couple of washes depending what kind of washing stuff you use,if used in large quantities it will just attract dirt and grime.They also make a grease which is great on electrical connections. But as I have said before each to there own. I'm trying the muck off range at the moment and there heavy endurance chain lube smells of strawberries and is sticky like honey to touch!