Mercedes says not to.
It is sealed.
The fluid is very expensive.

I think that it would be a good idea to do it like at 60k and then forget about it.? OH well we all have opinions.

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Benzmac:
Donnie Drummonds
1991 GMC Syclone
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM