Negative Positive
Title: Check Engine Light Came on the First Day
Review: I had someone stealing my gasoline out of my two cars. I purchased two locking caps, designated for each vehicle specifically, both made by the same company. For both automobiles, the check engine light came on during the first day of use. I took one car over and had the codes checked, and it came back as a "pressure" error for the tank, which is indicative of not putting the cap on tight. I didn't even bother having the other car's codes cleared. I used both caps until we moved out of that neighborhood, then I put the factory caps back on and had the codes cleared. I never had a check engine light come back on. These caps, while locking as designed, did not "fit" properly and allowed for gasoline vapors (or whatever) to escape. If you don't NEED a locking cap, don't buy this. I wouldn't consider it an "upgrade."
Is the review positive or negative? 