Originally Posted by Kjmack
Why do OPE always say 10w30 or 40 ? What's the premise behind the 10w , what's gained ? Why not 5w or 0w , I have a heck of a stock of Castrol 0w40 and I'm real tempted to use that in the mower . The manual doesn't even mention that synthetic is suggested. My new generac generator states that synthetic is needed .
What type of OPE do you have? I have a Kawasaki FS600V, a Honda GCV190, a Honda GC160, and a Tecumseh Snow King and they all either recommend 5w30 or list it as an alternative to 10w30.