| youl need green antifreeze theres red/blue/green differant coulors for differant cars minis youse green or can cause engine damage any motor shop will tell you as for the level been down check for leaks around pipes you shouldnt loose any unless its mixing with the oil lift oil cap off if theres a white gunk in the oil filler then theres water in the oil and that could be head gasket or worse but youd know if it was that temp gauge would be up | 
