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Originally Posted by Brian Carlton
I had a decent amout of rust on the top hose for the SD. But, the coolant that exited the block had no rust in it, so I'm not too worried about it. I think the citric acid flush should be reserved for those cases where the system has been neglected for many years. There is quite a bit of effort involved in eliminating all the acid after introducing it into the system. Furthermore, I understand that a degreaser is required before the introduction of the citric acid. It's quite an involved process.
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Good food for thought, thanks Brian.
I have the Palmolive and citric acid powder ready to go, but maybe I'll wait and see what the condition of the water pump is before I do it (the pump probably being a good indicator of the coolant system condition, no?). Is there any harm that can be done with the citric acid flush, as long as you flush the acid four or five times with tap water after doing the flush?
Thanks,
Pete.