Has the oil dilution issue in Dongfeng Honda CR-V been resolved?

[RosalieFitz]

2021 Dongfeng Honda CR-V no longer experiences the engine oil dilution issue. Here are the relevant details: 1. Oil dilution occurs when gasoline flows into the engine oil. When the engine temperature is low, gasoline evaporation becomes less efficient, prompting the ECU to increase the injection pulse width to enrich the air-fuel mixture. However, with increased fuel injection, some gasoline may spray onto the cylinder walls, known as the wet wall effect. When fuel injection is excessive, the gasoline remaining on the cylinder walls may not fully combust and instead flows into the crankcase, causing the oil level to rise. 2. During cold starts and warm-up in low-temperature environments, fuel injection volumes are higher, leading to unburned gasoline flowing into the crankcase and mixing with the engine oil. This issue can be avoided when ambient temperatures are above 0°C. If the vehicle is driven over a longer distance, the gasoline in the oil can evaporate as the engine temperature rises. Therefore, vehicles in colder regions with shorter single-trip distances are more likely to experience oil dilution, while those with longer single-trip distances can evaporate the gasoline in the oil, preventing the issue.