- Joined
- Oct 6, 2020
- Messages
- 2,408
I was wondering why I can't use an oil that has a viscosity of 50 in a self propelled lawn mower with briggs and stratton engine. It says to use Vanguard heavy duty 15w-50 in commercial use. On the bottle it shows walk behind lawn mowers, zero turn mowers, riding mowers, pressure washers, and generators. What do you think??