Ive owned the Honda 3000i for 15 years and have only replaced the spark plug. You get what you pay for. Its quieter than the Chinese knock offs like champion and built to last, and it runs and runs about 24 hours on a full tank when under small load, around 8 hours full load. Great generator. I get a kick out of people. $30-$59k on a truck, $10-!00K on a trailer or FW then they cant spend a few more $ for reliable peace and quiet and just buy junk. Love it when the park ranger came to the guy next to me and told him to turn it off. Mine was still running, they never heard it.