Can you turn the compressor by hand? Not the clutch, but the compressor. Is it locked up? Or is just the clutch not engaging? Have you tried testing the clutch with an ohmmeter? Try jumping the pressure switch to see if the compressor kicks on? Put gauges on and see what static pressure is, if...
So effectively it is just a cost of housing chart, and the map basically shows that.
Overall I think the whole premise is incorrect, as most people by retirement either have house paid off, or have much less than 30 years left with a lower payment than their house would have if bought at...
5K is a good change interval anyway for your usage. The short trips are the tough part. So given you drive about 5K each year, just change it based on the 5K miles, which is also close to the the 1 year. If you park inside a garage, it is better as you do not get as much of the cold condensation...
Wear vs Rust vs Maintenance Neglect vs Parts Obsolescence vs Collision vs Electronics. Place your bets and take a chance, especially on a used vehicle. All variables in a multi-variable equation as it relates to the life of a vehicle.
In general, I think if you do good overall preventative...
Is cold weather happening when you are doing track days? I think no, and they are different seasons. The easy solution is run the thinner "street" oil in winter, and then change to thicker "track" oil in summer or when you are doing track days. So you end up changing oil more often, only real...