If you are going to buy a filter and 2 quarts, what is it going to hurt to buy another 5 or 6 quarts (assuming the capacity is 8 qts)? Cheap insurance for longevity.
I treat my cars with the assumption that I will be keeping them for a loooong time. Based on that, 6500 miles on the same oil, is too many for my concience.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D