Today we had our scheduled 3 month cleaning activity. Since we recently installed a high power pump on our cooling system, we decided to clean our dirty girls with horse-grade shampoo and industrial compressed air (life on the farm is very dirty).
WARNING: DO NOT TRY THIS AT YOUR FARM!Before:

After:

Lots of bubbles:
More pics at https://www.facebook.com/StartHash (Like!, Share!, Mine!)Wow, this difference between before and after is huge, good job, they look brand new again!
I use a bottle of everclear. Works wonders!