Please excuse the ridiculous question - 2004 X5 4.4 - doing my first out of maintenance oil/filter change and I'm pretty good around cars. That being said - I can't get the friggin' oil fill cap off the oil fill portal in the engine compartment!! I've never seen it off before so I have no idea if it is a friction fit or a mechanical fit. I'm afraid to apply any force to it and either snap it off or damage something else. If anyone could please let me know what kind of force I should look forward to applying and how the cap is attached. Thanks in advance! John

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