On Sunday 10 February 2008 09:37 am, Bernd D. Ratsch wrote:
> Ok....the old school oils are no longer recommended in these modern engines
> (at all). Main reason: bearing tolerances are down to .006" and oil
> quality (and viscosity) is critical. Use too thick of an oil and you can
> cause premature bearing damage. Using a thicker oil in the summer and a
> thinner oil in the winter used to be the norm - but not anymore.
The owner's manual for my '01 seems to indicate 10W30 for most of the year,
and 5W30 for only the cold winter months.
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