You do realise by positioning the sensor there your gauge is not going to work until the thermostat opens?
A better place to position it would be on the rear hose that exits the block to the heater matrix as this has flow all the time not just when the stat is open.
Roof gutter?
What be this?
People seem to mostly use vent-gauges for their boost meters etc.
I was thinking of changing the oil pressure sensor for a "proper" one, but it would have been unneccesary faff :smile: