Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Gas cap

I bought 2 of these locking gas caps for my Dodge Dakota & my Chevy Silverado truck. I put the gas cap on the Dodge first. The key would stick and won't turn most of the time. Actually would cut my knuckle . But the biggest complant was after a few hours of driving around, my message center light came on showing something was wrong with my engine. I then visited my mechanic and he did a computer check . The computer showed that I had a fuel leak. The gas cap wasn't closing right and was leaking gas fumes. He cleaned up the computer and I installed my old cap and everything was fine. Plus the box the cap came in didn't have that it was for a Dodge or Chevy. I had to see for myself which cap fit the best. Go to your truck dealer and buy your locking gas cap. Might be a little more money, but you'll get the right one. I sent them both back for my credit back.