Years ago I was traveling for business in Mexico and South America. You never knew when you would be in need of toilet paper. As the places and method of traveling were somewhat extreme, I always carried an old JC Whitney car parts catalog along. A few people asked why I carried a car parts catalog in my briefcase. I explained that when needed, the pages could be torn from the book and crumpled for emergency use. It’s not Charmin, but it worked when it was necessary......
"Pour into your gas tank and this magic product will convert your fuel filter into the finest roll of toilet tissue available."
After all, they did offer the engine rebuild in a can. "That's right. Pour in the gas tank the next time you fill up and this amazing liquid will rebuild piston rings, restore cylinder walls, resurface valve seats and re-seal guides, not to mention create new rod bearings on the fly.
Why spend hundreds on a ring and valve job, when for $11.95 you can pour a rebuild into your tank ... that's right ... a complete engine rebuild ... in a can!" Just in case, they also had magic engine overhaul pellets, too!
What a great company! I bought many of their engine overhaul kits (not the canned product) and never had a problem.