Coil cleaner reccomendations

Going to Johnstone on monday, and get some coil cleaner. This stuff looks 
good. Dilutes 1-4 for condensors, 1-8 for eva****ators.

Enviro-Coil Coil Cleaner
       B81-474


The alki foam stuff I'm using dilutes 1-1. So the more expensive stuff 
dilutes down farther, and is cheaper in the long run.

What do you guys use? I've got a job next week, cleaning some BIG outdoor 
condensing unit fins. I started the job with alki foam, but the part of a 
jug I had didn't go very far, and I'm needing another jug of cleaner.

-- 
Christopher A. Young
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