QUOTE(littlefire @ Dec 18 2018, 11:02 PM)
Not to spam or talk bad about CRV/Civic 1.5T engine, but in US warmer states been reporting oil/fuel diluting issues. I believe Malaysian owners should also be aware of this as it is going to be a global thing. Not only in colder climate countries.
https://www.consumerreports.org/car-repair-...-rollout-plans/ "But some consumers say the problem occurs in warmer-weather states, too. For example, CR has heard from CR-V owners in Arizona, California, Delaware, Texas, and Nevada. And the database maintained by NHTSA includes accounts of this oil-gas mixture problem from CR-V owners in Kentucky, Oregon, Tennessee, and Virginia."
https://www.youtube.com/watch?v=fVdKNRgzGT8Honda even came out a video mention this oil/fuel diluting issues is in most cases, that’s okay. “What you’re seeing is a normal occurrence for this engine,” the video states.
“Some engine oil dilution is normal, even in warmer-weather states,” Martin says.

Actually fuel dilution is not uncommon in a direct injection engine since the fuel is directly injected to the cylinder. During cold start condition, the air fuel ratio is rich and thus more unburnt fuel will sip through the piston ring and thus mix with the engine oil. What differs from one engine to another from what i know is how fast the engine warms up, how aggressive is the tuning, how to trap and seperate the fuel, and how to evaporate. I am not sure if you notice that our CRV doesn't come with active shutter, as our hot climate here doesn't require extra blockage of cold air into the radiator to facilitate faster warm up.
Obviously Honda hasn't done a good job as they overlooked the use case of frequent short trip in a colder climate country.
Compare to my previous NA 1.8 car, I do notice CRV turbo has much more efficient cooling as she seems to require slighly more distance for the engine to reach working temperature. Don't get me wrong, usually working temperature will be reached in around 2km of continuous driving, in the morning. I do notice idling for long time doesn't really help in warming up.
I would say we don't really have to worry in Malaysia, I believe since the outbreak of this news, alot of Malaysian owners will also be constantly checking their engine oil level, and I have not bumped into any complain yet. Personally I have checked mine, it is well below the center of the scale. To be honest, I am more worry for the shift knob problem compare to engine oil dilution. Luckily mine is solid so far.
As a preventive action, my advise is not to idling the car for too long during cold start (it will take long time for the engine to reach operating temp), and should drive right away after maybe like 20-30 seconds of idling warm up.
For China, I have recently browsing through their reputable automotive forum, it seems like the fix work for at least for some owners, as few reported no increase of engine oil level in below 0C temperature, as of now.
This post has been edited by l2k: Dec 24 2018, 10:54 AM