Stant- BEST CAP CO IN THE WORLD---but buy it elsewhere---
i am now an Amazon Hater- so get it elsewhere- my opinion

Gas cap works fine. Should accomplish my goal of making it harder for someone to steal gas, although it seems that it would not much effort for a thief to circumvent the locking gas cap.

We decided that getting locking gas caps would be a good idea, especially when it is costing about [..] to fill up the Suburban. You can use the reference guide that is located at [...] to make sure you are getting the correct cap for your make and model of vehicle. With no end in sight for the price of gas, it is a wise investment to buy a good quality locking gas cap.

Haven't filled up since I got this, so I can't say how difficult unlocking is when you have to do it then and there. But no one's stolen any gas from me since I got it and that has been going on in my neighborhood recently.

The Stant Locking Fuel Cap is an inexpensive way to save your expensive fuel gas from being siphoned out of your gas tank or having a damaged engine if the gas is tampered with. Completely filled, the gas tank on my truck costs upwards of 65 green ones! I don't doubt that with summer travel time coming the cost of fuel will continue to rise. Bad enough to pay for a tankful once to drive me where I want to go but having to pay a second time to replace a tankful of siphoned off gas that got me nowhere except back at the gas pump would be a big kick in the wallet, not to mention other places! I figure paying a one time cost of twenty dollars for the locking fuel cap to continuously safeguard my fuel is money well spent. Besides, if you sell your vehicle you can always put the old non locking cap back onand keep the locking one for your next ride. I also invested in the POP & LOCK Permanent Keyed Tailgate Lock and have been satisfied with both of them. ~ The Boss