Hello omega friends, yes, there is still me! Today I need a tip from you, so I can possibly stick a very small leak in the plastic flange of the cooler -see inserted picture. The crack is not perceptible with the naked eye, and only a very small amount of cooling liquid – about 1 finger hat full in 12 hours – runs out, if the cooler is under pressure. I had the spot glued experimentally with a hot glue gun. Although the adhesive mass later at temperature She was able to hold back the cooling liquid. However, the engine was not at maximum operating temperature. So I need an adhesive/sealing mass up to an application range of 80 – 100° C. Certainly someone can give me a suitable tip. Thank you in advance, Greeting Ommega