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Engine coolant change
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Run the Webasto circulation pumps but don’t let it fire up, you will burn out the high temp limit fuse.
3greens is Powercool a extended life coolant? I thought it wasn’t.
Greg
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Webasto is one thing I have not messed with much other than to see if it would fire up ( it did but smokey ) so am not sure the procedure on a Marathon to just run the circ pumps…do you have diasble the flame? I will investigate and try that.
Not sure if the Powercool is long life, I suspect it is not but I plan to change it out yearly or about every 80K or so. I did this with DexCool on my Duramax…they say 150k miles or five years but I found draining it every 75k and adding in fresh kept everything in good shape, no water pump issues or head gaskets etc etc. I will get the test strips and check it at every oil change.
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Actually what you need to do and make sure to do it is purge your webasto heat chamber before turning it on. On the top of the webasto is a nipple looking hexs bolt. You need to loosen that bolt until you got get a steady stream of coolant. After putting in a bearing kit and new fuel pump I failed to do that and I melted the fuse that going into that chamber. If you purge you would not have to wrong about disconnecting wires.
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