It's the HS520 with the GC160 Honda engine. It is kept in an unheated attached garage where the temp typically doesn't fall below 40F.
I used to run GC 0w-30 in it in the past as I had it left over from my car. I don't have any GC leftover, so I'm wondering if I can fill it with any non-synthetic 5w-30 oil out there and call it a day? I don't mind spending a few extra bucks on synthetic if needed - after all, the oil sump is only about 0.6 qt.
The manual just mentions 5w-30 API SJ or later.
I used to run GC 0w-30 in it in the past as I had it left over from my car. I don't have any GC leftover, so I'm wondering if I can fill it with any non-synthetic 5w-30 oil out there and call it a day? I don't mind spending a few extra bucks on synthetic if needed - after all, the oil sump is only about 0.6 qt.
The manual just mentions 5w-30 API SJ or later.