I used M1 5W30 in my mower with the Honda 160GCV consumer grade engine from purchase in 2000 until last year, when I ran out of my old formula M1 SL. One year, I had some 0W30, and I used that. I have an hour meter on my mower, and it shows that I use it 60 to 65 hours a year. The oil level has never budged on the dipstick from year to year, and it always looks pretty good at the end of a year.
Last year, I ran out of M1 5W30 SL, so I got some M1 10W30 High Mileage oil, which is still the SL formulation. Still no oil burning at 60 hours. Mower now has about 480 hours on it, and the Honda engine still runs like new, even tho the manual recommends a 25 hour OCI.
By the way, according to the Briggs & Stratton website, 5W30 synthetic is their number one recommendation for all temperatures from -20 to +120. They say that using regular dino multigrades might cause excessive consumption above 80 degrees.