After almost three years of loyal "Slime" use in both my tubes and tubless tires, I've now flushed the stuff out of my tubless tires in favor of "Stan's" goop. In the years since having Slime in my tires I only had one flat and that was caused by ramming my front tire into a dirt wall thus ripping a 1/4 inch hole in the sidewall; not somehting any sealant is going to fix.
For some reason however, I got a small puncture in one of my tires and the slime just kepts seaping out while allowing my tire to slow leak even though there should have been an adequate amount of Slime in the tire to seal such a small puncture. I figured that, perhaps, the Slime had dried up too quickly as a result of the puncture (I found that Slime does dry up over time) so I went to purchase another bottle.
Since they didn't have any tubless slime, I opted to give Stan's stuff a try and I'm glad I did. The stuff sealed the puncture immediately and, after putting more than 50 miles on that same tire, I haven't had a single problem.
Just to add to the story, I was working on a buddies wheel (rebuilding the hub) and noticed that his tire had gone flat pretty quickly. I knew he had Slime in there so I pumped it up, rotated it and hoped for the best. No such luck though, the Slime missed the two punctures he had in the tire and let it go flat. Once again, I substituted Stan's for Slime and, voila!, no more puncture.
If you're looking for a good tire sealant, go for Stan's; it's less expensive (one bottle will fill four 2.1 tires vs. two tires for a similarly priced bottle of Slime) and it works exactly as promised!


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