RYDLYMEMarine Biodegradable Descaler - 1 Gallon

This stuff worked so well! My 50hp Honda outboard was having cooling issues and I thought it was going to have to be rebuilt which would have cost a fortune. I set up a 5 gallon bucket with a 800gpm pond pump, removed lower unit and pushed a 1/2" hose from pump onto the cooling water tube sticking out bottom of engine. Also used a 3/16" barbed fitting to extend the tell tale hose to bucket. Removed thermostat. Then taped a trash bag with the bottom cut off onto the engine and draped into bucket. Mixed Rydlyme 50/50 with water, and ran the pump for 3 hours. The water almost turned gray there was so much salt and junk in it! When I dumped the bucket there was a thick sediment in the bottom too. Flushed the engine really well with fresh water right away. We just took the boat out and it's like a new outboard! So happy!!

Excelente producto descalcificador de motores marinos . Altamente recomendado. En las imágenes tienes el antes y después.

Best descaler out in the market

It works as advertised. Recirculated 4 hours in 1999 90hp 2 stroke outboard, was very surprised at the sediment when completed.

Did the job but wish it wasnt so expensive. I need to flush my motor again as this worked at about 85% clean

Stuff works awesome , as good as acid without the harshness or environmental concern

👌

The product seems to clean well. The problem is the hose popped out of the bucket and stained my gel coat and Seadek. Be careful if you use it