We use Pennzoil in all of our mowers. Change oil every Tuesday. Been doing this for 4 years.
We also have been using Super Tech boat out board oil for all of our 2cycle engines for about 6 years now. I was told by several mechanics that out board oil is the best way to go on any 2cycle engines that you are going to be running hard. We haven’t had any problems out of any of the equipment and a lot of stuff has out lived there life expectances. Considering its $11.00 per gallon and making our stuff live longer then its supposed too, I came to the conclusion that is a great deal.