Honda push mower I purchesed a couple years ago has a ohv engine oil calls for 10w30 engine oil in the manual. Can I just use dino valvoline 10w 30 or is there a special hd oil for these engines
break in is 5-10 hours and you can switch to syn at 10 hours no problem, fact is that air filtration is the much bigger factor and with a good conventional oil that mower will last 15 years no problem.