I just flushed mine last week and replaced the t-stat & gasket. T-stat was $8 & I think the gasket was $4. You want to replace the gasket whenever you replace the thermostat simply as a peace of mind thing. Ho yea, and you might want to use a 180 degree t-stat instead of the 192. Doesn't make a difference other than just a tad bit more power that you prolly won't even notice. And it doesn't change the price either...
