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Message: <blockquote data-quote="AApple" data-source="post: 116926" data-attributes="member: 56">Be extra careful using a pressure washer, or car wash wand to clean the fin area...you can bend the fins over very easily with a little to much water/air pressure, especially iffin ya gets too close with the wand.  :Awe: The safest way would be to blow the fins area out with air first, to get the big bugs and crap out, then soak that puppy down with engine degreaser and let it sit. Then rinse off with a water hose, from both sides. When I did mine, I just brought it to work and stuck it in the parts washer, which is basically just a huge dishwasher...came out clean as could be. Then painted it with semi-gloss Duplicolor engine enamel, spraying the fin area just enough to get color on it. Too much paint on the fins can keep them from transferring the heat to the air as they should, as well as partially blocking airflow.  :good:</blockquote>