I change mine every year before I put it away for the winter(1yr or 5k miles). Throw porsche's recommendation out the window. $60 DIY oil change per year is a cheap alternative to a new engine!!! I use catro syntec 10w40 and napa gold filter. If your too lazy to change it once a year, buy a HONDA!/!(no offense, but seriously change it once a year)!!
Last edited by mptoledo; 10-14-2009 at 09:39 PM.
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