I think if and when you drive the car if the trips are short ( 4-5 ) miles
and in the winter 3 months is about right.

If you drive and the trip is long enough to warn the engine up to normal
operateing temperature, and sustain that temp for at least 15 miles twice a
yr is the way to go.

I don't know what difference it makes if the oil is synthetic or
conventional if it has moisture in it, it makes no difference, the moisture
is still going to damage internal parts, so why spend the extra for the
synethic.

my .02 cents

Tom


"Joseph Wind" <jpg@gif.com> wrote in message
news:XJXjc.50284$G_.19238@nwrddc02.gnilink.net...
> 3mo/3k miles is based on what Auto Manufacturers call severe conditions or
> every day use if you lived in California. It would be a waste to change
the
> oil at 600 miles. I'd agree with Frank, switch to synthetic and change
your
> oil less often. If you're worried about voiding your warranty, you could
> change every 6 months, but check the condition of the oil and other fluids
> at least once a month.
>
>
> "Khee Mao" <yousuckbigbad_buddhadaddy@yahoo.com> wrote in message
> news:c6p6jp$sjg$1@nntp1.u.washington.edu...
> > I've recently moved downtown and am now walking to work (and just about
> > everything else), which has decreased my monthly mileage to somewhere
> > between 100 and 200 miles total. I know the oil companies say 3 months/
> > 3000 miles (despite my manual saying at least twice that), but changing
> oil
> > every 600 miles seems kind of ridiculous. does oil go bad from age as
> well
> > as wear?
> >
> >
>
>