Review on 🔒 Green Stant Diesel Only Locking Fuel Cap: Secure Your Fuel Effortlessly by Sean Webb

I was a bit confused at first simply because there are no installation instructions. The bottom line is that you screw it in and keep screwing it in until you hear a loud pop that holds it in place. You don't use the key to "lock" it - the key only exists to unlock it. Once locked, the cap simply rotates freely - removing the cap without a key is not possible. Great security considering I'm parking on the hood and the gas door doesn't lock.