Kind of a leap to apply a spec for an aircraft to an automobile. Perhaps a flying leap? <img src="/forums/images/graemlins/wink.gif" alt="" />

The service manuals for cars are not nearly as rigorous as the service manuals for airplanes.

The most reasonable approach is to look at it as a design engineer and calculate the loading of the fastener. Second guessing what the person who wrote the manual meant is just that ... A guess.

So far real world testing of Franks method has been good. As backyard mechanics, we take the manual as a guide not a bible.

What the factory did can be improved upon and often need to be.