After purchase bleed and refill to make sure your lighter is full to start with. If you use your lighter daily, then refill once a week. It should last about 750 ignitions in the GX7 models, but it depends how long you keep the flame on each time. If your Turboflame model has a gas viewing window then check the gas level. Otherwise, a low flame usually means it is time to refill. DO NOT increase the flame height adjuster to get more life out of one gas tank. You will eventually cause your lighter to malfunction. Simply bleed and refill. Depending on frequency of use, some people fill theirs up daily, weekly or monthly. For long term storage it is best to fill up your lighter.