and like you - never spilled a drop! I have one for diesel, and another for water when we go ashore to fill up our water jugs. I give them to people I really like - they're that cheap. I have one in the truck, the boat, the motor home, and my moped. Do not leave home without one of these.
(yes, I invented this product, own the factory, and have grown wealthy selling them door to door)
...but seriously, they are a great product.