Well,
I am still very happy with my Chinese generator. I used it for powering tools on a month long project and it worked like a champ. As suggested here , I am changing the oil every 10-12 hours. I have been using Castrol Syntec 10w-40 and it seems to be holding up quite well in the Texas heat. By the way, in our fleet we have Yamaha, Honda and Onan units. Is the Chinese Pep Boys Unit as good? Probably not. but for the price I think the Chinese sets are a real bargain.