Generator Coolant System on a Marathon

[davidbrady]

Chuck,

That's the same process I used when changing the coolant on my DD S60. Assuming you can empty half with the generator engine petcock, after 3 flushes you'd be at 88% pure at 4 flushes you'd be at 94% pure. I did around 3 flushes on my S60 with a drain percentage of around 65% for a final purity of around 96%.