AN AMERICAN FLYER® REPAIR CLINIC
From Port Lines Hobbies
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"Bullfrog Snot" is a liquid rubber product which allows you to easily coat a locomotive drive wheel for improved traction and pulling power. Applied properly, it creates a very thin, smooth rubberized coating on the tread of a drive wheel.
It is very important to follow instructions in order to produce a smooth surface with no irregularities, but it is not at all difficult to do.
You can order it from our website AF PARTS inventory, under "Lubricants" (a misnomer, in this case !).
The following is a review which appeared in Model Railroad News in April, 2010.
