one of the symptoms of my rear hub going out was an intermittent vibration on the passagener side wind screen. If its a local event at the gas cap, it probably won't get worse. If the car needs new wheel bearings, you can be certain that it will become very obvious.
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SOLD - 2002 Boxster S - PSM, Litronics, De-ambered, Bird Bike Rack, Hardtop, RMS leak...
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