He'll need to service his cooling system - I'm assuming that means flushing the green old fluid out with water and replacing it with MB approved fluid: Zerex G-05 full strength and mix 50/50 with distilled water.

Would he need to do a citrus flush on the system or no?

If there is a good link on the procedure for doing that plz send it this way.

James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K