Originally Posted By: Zedhed
Honda GVC160 engine, change it once a year with WM straight 30 non-detergent oil like the manual says. No wasting money using 0w-40 GC or RL in a mower.....
Originally Posted By: 1999nick
How old is your owner's manual? I thought recommendations for non-detergent oil went out 40 years ago, and I thought Honda recommended 10W30.
No kidding, how old is that? I just purchased a push mower with the GCV160 (not GVC160) and it recommends 10w30 for most temperatures.