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Old 02-28-2015
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peteaeonix peteaeonix is offline
Former Bird Owner
 
Join Date: Jan 2008
Location: Ridgefield
Posts: 2,010
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I used Simple Green. It's mild, doesn't (appear to) hurt the aluminum, and isn't particularly expensive.

Air conditioner coil cleaning spray (KingBiscuit's suggestion) also sounds like a good choice as it would be safe for the aluminum often used in radiators.

Caution about water pressure is important. High pressure water (from a pressure washer) can damage the fins, especially if the wand is held too close.

I had a commercial bus service company use a "steam" cleaner on the radiator (highly effective!) and I note that they kept the wand back some distance (I was too far away to know exactly how far, but clearly they weren't very close). Their mix was more steam than high pressure water.
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Pete Masterson
(former) 95 WBDA 42'
(now) 2011 Roadtrek RS-Adventerous
Ridgefield, WA
aeonix1@me.com
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