You can use the search function for the valve adjustment specs and special wrenches required.
Plug it in over night and the engine will be warm in the morning. It uses the about the same amount of elec. as a 100w bulb.

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Benzmac:
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM