On your car you're in charge and it sounds like your plan works.
If your girlfriend is in a geographic area without extreme temperature
changes that cause condensation, I'd say once a year. If however she is
in an area with extreme cold as NE it could be changed at the begriming
of the winter season and again at the end.
Dirty isn't the question here its just the potential of moisture
accumulation in the oil pan that often gets distributed throughout the
engine and can cause rust pitting in hot cylinder walls in situations
where the car is sitting for long periods gathering more condensation. If
the car is garaged and stays at constant temperatures other than during
drive times I'd just change it once a year.

Stan Wilder

On Thu, 10 Oct 2002 10:28:54 -0700 dave <dave@SPARKPLUG.COM> writes:
> Hey Folks,
>
> I have a semi-Vanagon related question for you all.
>
> I drive my Vanagon about 18 - 25k a year. I get my oil changed every
> 4k
> miles, with no problems.
>
> My girlfriend on the other hand, puts about 2200 miles on her car
> (1988
> Nissan Sentry, with 68k) a year, driving it once a week, and
> sometimes
> letting it sit for 2 - 3 weeks at a time.
>
> When should she change her oil?  Her total miles for the last year
> was
> 2,550. She had the oil changed recently (June I believe), and wanted
> to know
> ... when she should change again, knowing it sits a lot, and is not
> used
> frequently.
>
> Just curious,
>
> dave bowers
> 1986 Westy "HMS Beagle"
> www.dave-bowers.com/vw
>
>

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