Well, I got a little surprise in the mail today; the pump that I RMA’ed to C-systems made it’s way back to me, it wasn’t repaired and still didn’t work, and since I had already received a replacement pump I decided to crack it open and see why the pump failed….as you can see below, the shaft seal leaked into the motor housing and caused enough corrosion to seize the motor and burn it out…or the water shorted the motor out, no way to tell. Judging from the rust and the build up it was a slow leak that killed it. Good thing the 1st series of pumps had the motor housings marine gooped together and were water tight….such is not the case now. Moral of the story: C-systems pumps are crap, they are a time bomb waiting to zap your system, the shaft seal is poor, the aluminum is prone to corrosion, and the company back pedals away from their products with disclaimers. below photo's how a pump in use for 3 months, with distilled water and hydrocool anti-freeze @ 3-5%
