Atomic 4 cooling system flushing

[Ray Hughes]

The coolant discharge from my raw-water cooled A-4 varies from good flow to weak. Moyer Marine suggested flushing the system with a 50% water-diluted muratic acid solution. The local yard recommended "Salt-Away" as a better and safer flush. Any inputs? Thanks, Ray.

 

[gareth harris]

I have never heard of 'salt away', but did the acid flush as per Don Moyer, and it worked well. The acid could cause damage if left there too long (i.e. not flushed out thoroughly enough at completion), but he told me very few of his customers have problems after doing the job as he describes it.
Gareth
Freyja E35 #241 1972

 

[Walter Pearson]

Another product that is often recommended is Marsolve. Somewhat more expensive than the hardware store acid, but claims to be effective and yet less toxicity, etc.
http://www.marsolve.com/marsprodn.htm