[spdbrake]

Med Blue 242 and 243 liquefies @ 300f so not good for engine components or brakes etc..
High strength Red 277 will is rated up to 450f and usually you need to heat the part to 500f to get the bolt or nut to loosen. Although it may hold up on a water pump it def won't stay solid on Header bolts, Brakes, exhaust parts.