Grabbed a boat that I have not run in 3 months and went to lube the flex and noticed rust for the rear 2 inches. It was not thick but you could see it so I lubed it up. I always lube my shafts before a run but after a run have never done anything but wipe the hull to get rid of the water spots. I now will lube the shaft after runs and then thought about the cooling system. Blew air though it and and got some dirty water out of it. I will now lube the shaft after every run when storing and clean the cooling system as well. Have not checked my brushless water jackets for stuff build up but assume these maybe harder to clean. Brian
Flex shaft rust
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