Otto - Are you draining down your coolant so no seepage during Marine-Tex repairs??? When you remove the old patch material, it will more likely than not allow for seepage/leakage which will prevent the patch from adhering properly. frown


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)