I am looking to change to one oil weight to stock for my generator, lawn mower, and snow thrower. They all run B&S motors ranging from 6.5hp-10.5hp. I have made the decision to go with a diesel grade oil and find Delo 400 specs favorable. I may go with Rotella T if I cannot get Delo 400. Which weight should I go with for the year-round uses: 10w-30 or 5w-40? Delo 400 10w-30 is not listed as synthetic but specs are close; Delo 400 5w-40 is synthetic.
Thanks.
Thanks.