if you drill a small (1/8") hole on your 195 degree stat make sure it's at the highest point when you install it. that way air will bleed out of the hole into the top hose before the stat opens. you used to be able to get stats with 'jiggle' pin in a little hole for just that reason. https://www.google.com/search?sca_e...HdTSEuAQtKgLegQIFRAB&biw=1372&bih=608&dpr=1.4neil.