May 21, 2013
No real difference, Sam. SAE 10W-30 is the grade (weight) of oil, and that part of the oil is the same for all brands. It's perfectly fine to use a non-Honda oil in your Honda mower, as long as it is marked SAE 10W-30. Change and fill it according to the owner's manual, and you'll be fine. The brand of oil used does NOT effect the warranty. Finally, when Honda certifies the engine for the EPA, we use regular petroleum oil, so we suggest owner's use it as well. Synthetic oil is fine, and again, no issues if you decide to use it, provided it is 10W-30, and you change/fill as stated in the owner's manual.
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