Hi everyone, im new to the site, and i have an issue with my Vauxhall insignia 2.0 sri vx line 2014, Im loosing engine coolant, but its not going into my engine, i have done a head gasket test and it stays blue, i had it in a garage to do pressure test, and everything is fine, but when i drive it comes up on screen, saying ''engine coolant low'' but when i check my coolant levels, its empty...... can anyone share any advice on what this could be
thank you in advance