My John Deere L100 Series Rake has a flat tire. I inherited the mower when I bought my house so I have no idea how many hours the engine runs. I didn't want to invest in changing tires so I decided to give it a try. The tire can hold air well enough to mow my lawn, but the next time I go to mow it's completely flat. Follow the easy to follow directions on the bottle and use about half a bottle and the tire will hold air for 6 weeks after application. Overall very satisfied