I tend to "over" maintain my cars.

For my 98 E320 I change the rear diff, trans fluid, power steering fluid around 75K miles.
Fuel filter every 60K miles.
Air filter every 30K miles.
Pollen filters every 15K miles.
The brake fluid every 2 years, radiator flush & fluid every 3 years.
Oil changes every 5K miles.

I do not believe in "filled for life" fluids for cars.

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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles