Passenger tire had a slow air leak. This was the first time I removed the valve stem. It was easy but the stem popped out after I unscrewed it. Luckily I found it in the dirt. It is possible that not all air has been removed from the tire. Squeezing the contents through the chamber and into the tire wasn't difficult. The hose wasn't that tight. Replacing the valve stem is also easy. I used about 3/5 of the contents of the bottle. I washed the plastic tube and bottle cap and wrapped the bottle in plastic wrap before screwing it back on so I can reuse the kit in an emergency. I've ridden about 700 miles (including two 200 mile round trips) and the tire is not deflating.
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