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So what is the point of changing it?
Forgive my ignorance, but if the fuel economy might only be mildly affected (Not enough to warrant $120 and time to install)....what is the point in changing it at all? I know it's a periodic maitenance item....I just don't understand why (unlike fluids and lubricants that wear down and can decrease component life if not changed regularly).
Thanks,
Russ
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