Descaler Solution, Multi-Purpose Descaling Solvent, Bio-Growth, Marine Boat Engine Flush and A/C Systems

Used this to flush a clogged heater core. Can’t believe how much debris it cleaned out. My heater core was almost completely clogged but now flows like new.

Can’t really review because this is meant for a sealed system and not for outboards

Circulated through my boat seawater loop with a rotary pump. Loosened up so much "stuff" that the loop plugged more than the pump could do. After connected a garden hose to the system and blew out tones of scale and shells. Never seen as much flow through the system afterward. Did exactly what I wanted.

The cleaner worked great

I used this to remove sea growths that had clogged the seawater side of my boat's air conditioner. I injected it into the system from the outside seawater drain port, let it sit for an hour, and then flushed with fresh water. It took several passes for the cleaner to remain pink/red. The compound loses the red tint as it dissolves the growths. I was much more comfortable using this than various acids, as recommended by many yachters and service techs.

Works great I tried it for the price works good but not as good as starbrite descaler

I used this to clean the heat exchanger on our inboard diesel engine. After 3 flushes, the color stopped changing. Operating temps are back to normal, and all is well! No mess, no fuss. Great product!

While I like the color change feature, it took a full gallon to 3 gallons of water to flush a 7.4L Crusader Raw water side in a closed loop. The heat exchanger and oil cooler were in this loop. I started with 1 quart to 3 gallons, had to add more at 2 hours then more at 20 more minutes, then the rest of the gallon in 20 more minutes. Circulated for 3.5 hours before color stabilized at very pale pink. Nice feature, but at $8 a gallon for 30% Muritic acid (pool supply stores) versus $35 a gallon for 2% Muritic acid (this product) with a color change indication of acidity, I can buy a lot of litmus paper!!!