My 2005 mobius xlv has been over heating on me randomly. Just out of the blue the gauge would peg, then I would turn it off let it sit for 10 minutes and start it back up and down the gauge would go. I replaced the impeller and still same thing. So today I took out the thermostat and it never happen the rest of the day. I want to put in a little colder thermostat because I run my boat at powell and its been vapor locking on me as well. I think I have that problem solved but... can I go to one that like 10 degrees cooler? If so does anyone have a part number for one from napa? Thanks, Marty
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