A tubeless tyre can retain air even when it has too little active sealant to close a new puncture. Checking pressure does not replace checking the liquid’s condition.
For Doc Blue, the stated protective life is roughly 2–7 months or 2,000 km; temperature affects that interval. Check the sealant before a long tour.
Bicycle wheel and tyre maintenance supplies in a workshop. Editorial illustration.
Choose the quantity for your tyre size and particular sealant. Care also differs: Stan’s Race Day needs inspection every two weeks and must be poured directly into the tyre, while Original can go through a compatible valve. Record the refill date and follow the chosen product’s instructions.