I believe what the book read. On a clear day you can see GM.
In the 70's GM may have wanted their cars to wear out at 100,000 miles so you buy new.
BUT Mercedes?!! I think Mercedes wants you to go 500,000 miles in thier machines. That's the reputation they want. So if the enginiers at Mercedes says 10,000-15,000 miles between oil changes...it seems to me they must feel that's enough.
..
I still chickened out and did mine at 8,000 miles.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles