Thermostat question

[steplift20]

Their used in salt water do there is crud on them but they are not cheap so I was thinking why not just clean them, I used to change my plugs every year but stopped doing that cause they are over 3 dollars rack and they are gapless ,and they work fine, I think I'm going to clean the thermostats too. Still waiting for the heavy hitters opinions but I think you are right too.