Generac's GP6500 portable generator offers PowerRush™ advanced technology, which delivers more than a 40% increased starting capacity allowing you to do more with less. Generac's COsense® advanced sensor technology detects dangerous levels of carbon monoxide faster than a household detector. It shuts off and warns the user when carbon monoxide builds up. Generac's OHV engine and large-capacity steel fuel tank ensures extended engine life and run times, while the steel tube cradle provides added strength. The low oil feature protects the generator from damage. The GP6500 can be easily transported across rough or difficult terrain with the heavy-duty wheels and easy fold down handle. Even maintenance is a breeze, with the hour meter keeping track of necessary upkeep at regular intervals. STOPS, ALERTS, SAVES & offers powerful protection from hazardous carbon monoxide. Update feature bullet 6 to "COsense® Technology STOPS, ALERTS, SAVES & offers powerful protection from hazardous carbon monoxide.