On Amazon, the question re: use on a mountain bike was answered by the mfgr:
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So I called the above number and spoke to Kelly from the technical team. He said it can be used on a fat tire but would not recommend it on my tires, 26x2.15, due to the fact that it is quite viscous. On a fat tire, he recommended adding a tiny bit of automobile anti-freeze to thin the product. For my size tires, he recommended
Tube Armor which he stated is their product specifically formulated for bikes and is marketed by White Lightening.