(this is for IO)
The mechanic I hired for the job said he puts the lower unit in a vat and runs it. Then he puts muffs on it and runs pure antifreeze through it. I think the vat starts as pure anti-freeze. The vat was not that large. His said his anti-freeze was not RV antifreeze, but was biodegradable / safe for the environment and good to -100.
The mechanic I hired for the job said he puts the lower unit in a vat and runs it. Then he puts muffs on it and runs pure antifreeze through it. I think the vat starts as pure anti-freeze. The vat was not that large. His said his anti-freeze was not RV antifreeze, but was biodegradable / safe for the environment and good to -100.