How long does synthetic last in the engine? on 2001 Volkswagen Passat

My 2001 Passat has 126,000 miles on it. I currently only drive it about 5,000 miles per year, 90% of that on the highway. It sits all week in a garage and then I drive it on the weekends.

I use Mobil 1 European 0W-40 and a Mobil 1 filter. How long can I safely go between oil changes?

Asked by for the 2001 Volkswagen Passat
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