10w30 after 50 hours of break in, IMHO it`s over kill. Just run a good grade of motor oil. Got over 340 hours on my 15 hp Kawa. and it starts on the first pull ever time. Never have to add a drop of oil between the 50 hour changers.
I recently changed from the JD oil to Mobil 1. Don't know if it makes a big difference, but a less than 2 quarts it makes me feel better. PS>>I'm convinced that my X585 runs quieter.
Oils and engines have evolved over the years. In the past you needed straight 30W oil. The use of muli-visc oils wasn't recommended because of excessive oil consumption. In some engines even today that still hols true. But you will find that now many engines give a temperature and viscosity range for you to help determine what type of oil to use. I think a multi-visc oil is a better choice, and that is what I would use. I would change the oil for the winter, and then change it for the spring/summer/fall. Quick thought, why do many auto/truck engines use 5-30 year round, when the temp.range for 5w-30 only goes so high?
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