July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Section 4 (Engine & Automatic Transmission Cooling System): Engine: Fan-Radiator: Cleaning

WARNING: This page is about a different car, the 2006 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Clean the fan blades using a mild soap and water. Do not use an abrasive to clean the blades.