A Honda 160cc horizontal shaft mower engine holds from .61 to .63 of a quart of oil, depending on the engine model. A vertical shaft engine holds from .58 to .69 of a quart.
About the Author
Melody Lee holds a degree in landscape design, is a Florida Master Gardener, and has more than 30 years of gardening experience. She currently works as a writer and copy editor. Her previous jobs include reporter, photographer and editor for a weekly newspaper.