Personally, I simply do not see how anybody can maintain these vehicle somewhat close to OE performance standards and spend 15 hours per year.

I recently rebuilt the front suspension on the SD and the time was easily 25 hours spent here and there.

Some years, they can go with minimal maintenance, however, when something major needs attention, the time can really pile up.

My estimate for each one is 75 hours per year and this would include waxing and detailing work on the interior.

By no means is this figure sufficient to return the vehicle to factory specs..........it simply provides a good looking driver where all systems work as designed.