Well as I gotta say is, BULLFROG SNOT is "UNREAL" !
I used one of my Lifelike Berkshires as the test engine.
I have a set of eight heavyweight passenger cars on the layout. I have quite a lot of Lifelike Berkshires so I took several and all spun their drivers and couldn't budge the cars.
My test steamer I put the Bullrog Snot on the back set of drivers and let it dry overnight. Took it downstairs this morning and hooked it to the same eight heavyweight passenger cars. At first when I started it, it started pulling all the cars with just a touch of wheel slip. Within just less than a minute this engine pulled those cars with no effort, could have added more. No more driver slippage just great pulling power.
Before applying the BullFrog Snot I ran the drivers and used a cotton swab with isopropyl alcohol and made sure the driver surface was clean. When this BullFrog Snot drys theres no way for it to come off as it sticks to the metal surface like nothing i've ever seen.
Now to do all my other Lifelike Birkshires, Lifelike Y3s, Bachmann 2-6-6-2 Class H5s and many others.
One thing that I did other than the instructons said was while I had my transformer turned on 3/4 speed while the steamer was upside down in a foam cradle with drivers turning, I applyed a decent sized drop of BullFrog Snot to the end of a round pointed toothpick and while touching the driver face I used the sharp tip of the toothpick and lightly moved it back & forth applying a very even coat. Then turned the transformer on full throttle for about a minute then set the engine on the table untill dry.
Have one of my Bachmann H5s now drying to test pull with it. On all articulateds i'm applying BullFrog Snot to each set of back drivers.
This is something that everybody needs to have.
As far as the price, with what it does i'm glad I got it. Theres more than enough in the jar to do 100s of engines, and then some !
The "REAL" answer to all those non-pulling steamers as well as diesels.
Just a side note, make sure the edge of the bottle and inside the lid are clean before putting the lid on as this stuff sticks like glue.
Ernie