Yep, Ru-Glyde is slightly tacky when it dries, but you get a nice long "working time". Great stuff.
Ru-Glyde and most other tire mounting lubricants are based on a mild soap, not detergents, and they include anti-corrosion components. There's a difference.
Dish detergent, Windex, and many other hillbilly substitutes are great ways to corrode your wheels. Yes, steel and alloy wheels are painted or powdercoated, but there are always scratches in the finish. I've seen the results after a year or two several times, and they're not pretty. Please don't use detergents for mounting tires.
Slippage is very unlikely with passenger car and truck tires. But motorcycles have enough power and torque to make tires slip on the rims and cause all sorts of interesting havoc if you use a substitute lubricant that hangs around and stays slippery. For example, there was some idiot over on a motorcycle site who was advocating silicone spray; very, very bad idea for several reasons.
Use the right stuff; tires are kinda important. You wouldn't mix up your own motor oil from stuff you found under the kitchen sink, but for some reason there's a powerful compulsion among some folks to brew your own tire mounting lubricants without considering the long-term effects of the residue.
Anyway, back to the actual question: for your application I don't think it'll make much real-world difference, but I'd insist on getting what I ordered. You're getting half a pound less, for one.
