Generac Mega Force 8125/6500 Watts Portable Generator. Heavy Duty Contractor Gasoline Generator. This is a full pressure oiling system, with an HD engine using a replaceable spin on type oil filter and a low oil level shutdown safety system. If you are looking at larger generators how many are you finding with a pressure pump oil system with a replaceable automotive oil filter? That is what helps this unit out live and perform other standard splash oil systems! This is a proven engine and power head combination known for their long life and dependability under load. This units first 100 Hr. service has been completed: New oil and new oil filter, new spark plug, valve clearance checked and set to factory specification, head bolts retorqued to service specifications. This Generator has only 75 Hrs. on the clock and is designed to run well into the thousands of hours of full output without problems. A brand-new generator needs a proper break in and early services done and performed BEFORE it is really ready to be put into full long-term service. This has all been done. This machine is extra clean and starts and runs very well. All outlets have been tested at proper loads with the engine and power head fine-tuned to produce the correct power frequency output of 60 Hertz under load. Thanks for looking!!