"Works like a champ - good price"
(San Diego County, CA)
This cap does exactly what it says it does. I decided to order it because the green diesel cap wasn't available from my local guys, or they wanted a hefty premium for it over the other colors. It took a little while to figure out how to use it but now it's easy. When installed insert the key and turn 90 degrees, loosen the cap about 1/4 turn, pull the key out, and then use as any other twist gas cap. No need to use the key again for install after filling up. My only gripe is that it isn't compatible with the OEM lanyard that keeps the cap from getting lost but that hasn't been much of a problem. I'm more concerned with grinches trying to steal or otherwise taint $160 worth of fuel in my tank.