Five push mowers and a lawn tractor last weekend. 3.5 HP Briggs Classic, 5 HP Briggs Quantum, 6.5 HP Briggs Quantum, 6.75 Briggs Quantum, Honda GCV 160, and Kohler Courage 20. All received Motomaster (Canadian Tire) Synthetic 10W-30, and Kohler got genuine Kohler oil filter. I'm the guy who people give their old "broken" mowers to. I have two of them ready to go to a new home, and will give another one away soon as well. I like to have two good push mowers in case one of them ever breaks. Yes, I use less expensive oil, but change it often. I'd rather have clean inexpensive oil running through these little engines than dirty oil of any kind. I also bought a jug of Motomaster 5W-30 synthetic to do four snowblowers, hopefully this weekend. 3 are older Tecumseh 8, 9.5, and 11.5 HP engines, the 4th is a 305 cc Briggs. Again, 2 are mine, the other 2 are for family members. I have been using Supertech synthetic for everything the past few years with excellent results, but with travel restrictions these days haven't been able to get to Walmart.