The only answer I can offer about "over-servicing" your car or truck is; it's your money! Do you burn money to keep warm?
Most people follow the factory service schedule(to some degree). Mercedes Benz says to change the oil after 10-12k miles. Rarely do engines have oil related failures when the scheduled services are done.

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MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH