Yes you do need a lock, to prevent tampering, which comes in many forms. i.e. you do not want a foreign substance added, unless you are the one adding it like a fuel system cleaner, etc.
Quote:
Originally Posted by Z28sr2fast4yall
This tech was created in 2009 by ford... Has been used in a lot of cars... Cadillac has the same tech and is currently using it. It was designed to where you can't stick a hose in it and get gas out. You don't need to lock the gas filler that you can't get gas out of...
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