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Old 09-29-1999, 07:38 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Since the a/c line from the low pressure is cold, your S.A. is correct. Mercedes uses fuel coolers on the return side of fuel system, fuel returning to tank is cooled whenever a/c compressor is on. This started in 1980 on 450 models. Most euro versions don't have fuel coolers.