As per company official written policy company warranty any product to be free from any manufacturer defect for 30 days. That being said, company customers are important to us, and so company will generally provide a friendly extension to 1 year from the date of purchase. Any leaking tank returned to IMS for any reason will be destroyed during the inspection process and will not be returned for any reason at any time. The safety of company customers and of company riding enviornment is of the utmost importance to us, and a tank that is leaking should NEVER be used for any reason.