Champion generator

I to have a Champion 4000/3500 with 30 amp RV plug, 120/220 volt. I bought it new at Tractor Supply in 2013 for $300 + tax. We boondock camped 54+ days that year. I always check the oil, 1st and fill her up with gas. I was pleasantly surprised at how little gas it uses when not running the AC! We ran the AC when needed and watched a movie at night to keep up our batteries! The electricity is clean enough to run our TV and computers with no problems at all! I have done nothing but change the oil when needed except, for when I broke the recoil rope, when I pull the rope a little too hard in the winter time! Just choke, summer or winter, pull the rope 1 time, take the choke off and she purrs like a baby! Love it! The exhaust is not quiet bad not too loud either! We love it! Works for us, perfect!