Is the oil dilution issue severe in the Civic 1.5T?
1 Answers
The phenomenon of oil dilution in the Honda Civic does exist but is not severe, with only a slight increase. Moreover, almost every vehicle has such minor issues to some extent, which can largely be ignored. Relevant details are as follows: 1. Oil issue: All direct injection vehicles experience the problem of fuel permeating into the engine oil. During routine maintenance, there is a step to check the oil level by pulling out the dipstick, and a gasoline smell is often detected. This indicates that fuel permeation occurs to some degree. Previously, the focus was on oil burning, but most new engines now adopt direct injection + turbocharging. Due to the presence of turbocharging, engine oil will be consumed to some extent, so any increase in oil volume is offset by this consumption. 2. Vapor issue: The oil increase comes from fuel sprayed by the injectors permeating into the oil through the piston rings. In reality, as the engine oil temperature rises, this fuel will re-enter the combustion process via the crankcase ventilation system. Vehicles with oil burning issues often have design flaws in their crankcase ventilation systems, leading to insufficient separation of oil vapors. As long as maintenance is performed earlier in terms of time and mileage, the impact on the engine is minimal.
