Boy, you'd think in a car with more computing power than the Lunar Landing
Module they might be able to base service intervals on more than liters of
fuel used. And just to expand a bit on the computer-love of German industry:
Adidas has developed a running shoe that sports a slip of a computer in it,
which constantly, or 1,000 times per second, adjusts the amount of
cushioning in the flat sole. It's called Adidas 1, and will cost $ 250.00
US......service intervals are not yet specified.
I think they discovered that fuel burn was as reliable as any fiddling about
with other variables. Numerous cold starts and short trips adversely
effects mileage as does stop and go driving. And these are the very things
that encourage a more frequent service interval. One area unaddressed is
the external conditions, dusty conditions etc.
R / John
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