I look after a solution to check the level in an alloy header tank.

- first I imagine a transparent hose and 2 hole with compressor connector
it sames hard to find transparent hose with is good for 130°C water temp

- I check now a solution with a coolant level sensor
it's easy after to connect it (elerical) on the washer level jack to see inside if there is a problem
but I do not find a nice solution to do the hole and secure the fitting (1bar pressure)


somebody else have got a nice solution ???
any idea


I check the posts and find nothing