Fixing Axle Leak

Just makes sense to have a service manual any way. For anybody. They were good enough for the people who worked on these cars daily for a living. Why would anyone not want one for occasional servicing. And not everybody has the aptitude to even change their oil. You can't know too much and can't assume because you can do something that someone else can too.
We all had to learn sometime. Why does school take 12 years to learn to do the 3 R'S ? Have a senior tell a first grader how easy calculus is... Just throwing it out for anyone who might want to know... Their choice. But with an option...