I am not in agreement with the theory of old Joe either but, I will say this.

I recently found out that some long haul trucking companies are using the "never change you oil theory" in thei big rigs. They are running high grade synthetic, changing the filters and just toping off when needed.
For what its worth.

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1999 E300 TD 190,000
1996 Passat TDI 225,000-sold
1996 E300 120,000-sold
1998 Jetta TDI 186,000 -sold
1983 Chev Suburban C20 6.2-sold