If you read the manual it says no more than 3/4 on the gas with short bursts at full for no more than a few seconds at a time and never hold it at one speed to long so vary your speed and after 8-10 hrs your good to go after a 10 hr inspection and oil change. This is what the seadoo manual states. Now some say drive it like you stoled it. Now I just went through this with 7 hrs on mine and I followed the manual.