Michael, pleased to see
True Delta in this forum. Your efforts are notably more in line with I expect to find in a reliability panel. My entries on the site have been worth the effort, and the info return has been more than that.
Couple of things you mentioned re: your '5.
1. Headlight bulbs should be readily available at any local auto supply; Autozone, Checker, etc. Bulb life in our cars is short and shorter, apparently as a result of an electrical anomaly that no one seems to be fully define, except for constant vibration from bulbs slightly loose in their wire retainers.
However, my last change six months ago to a pair of Sylvania Silver Star Ultras has lasted longer than any combination except OEM 55 watters, which were puny output and didn't last that long, anyway.
2. Rust. Have 136K and no sign anywhere, but I live in Colorado, as you know. No salt in the winter and very low average humidity helps.
I would encourage all forum members to register their vehicles on
True Delta to further enhance
TD's various applications, in addition to the reliability charts which are most informative, particularly the comparisons to other vehicle makes.
And a big tip of the chapeau to Antoine, as well, for making this forum
THE Mazda gathering place on the 'net.
