Don't loose faith in the Book Tiny, just rejoice in all those old ads in Popular Mechanics. I had totally forgotten most of them and hadn't seen them since I was a kid. Great stuff.
Maybe another way to look at the valve train diaper is that it functioned as a poor mans oil filter. Silly? Yes. But I'm surprised some clever advertising type didm't claim it. What always astounds me is that this was in the 50's and WWII was won on 40's technology much of which was truly genius.
