What does it mean when the oil in your lawnmower looks milky or white?

When the oil in your lawnmower appears milky or white, it typically indicates that water has mixed with the oil. This can happen due to a leaking gasket, a damaged seal, or condensation buildup, which is especially common in humid conditions. Milky oil can reduce the lubrication effectiveness, potentially leading to engine damage, so it's essential to drain the contaminated oil and address any underlying issues before continuing to use the mower.