I've long wondered if the whole "change your X miles or every X months" is not just a way of selling more oil product. Particularly with syntetic oils and cars that are barely driven like your friend's 10 year old Carrera.
The filter is a different story. Anyone who has ever swapped out an air filter can see that these things get filthy.
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GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
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