Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I would have to assume I already have 5 hours and being its 50 degrees outside, I figure its a great time. When I bought the machine I had the dealer put in B&Stratton 5w30 synthetic oil but it was the last one. Called around to a few places but seems nobondy has it in stock. Do I buy it online or can I use Mobil 1 synthetic 5w30 in its place. My plan was to stick with one oil for the life of the motor. My second question is does this motor have a filter, I would say not. Just trying to make sure. Is there anything else I should do after the first 5 hours?