With my H&S I monitor the exact 4 that Stanley has detailed and it is VERY comforting to know exactly what is happening in those 4 parameters. EGT never gets above 1050 now and EOT and ECT usually are within 4 degrees unless I am towing and going up hill, inwhich case they may vary by 10 - 15 degrees under stress. The surprise is to watch the Transmission oil temp go up to over 200. All the while the idiot tranny temp guage shows no difference at all.