Wife has a 2018 Honda CRV 1.5T with 16K miles on it. We had no idea the engines in these cars had a dilution problem when we bought it, but I have seen it first hand. Wife drives 20x miles to work and back everyday...but we drive it several times a week at night or weekends on longer trips. The fuel in the oil never evaporates, every time I check the oil level the dipstick smells like gas, and its always above the max line (Even 500x miles after an oil change, fuel is already there). I have changed the oil and filter every 5K, it always wreaks of fuel, and has about 20% more drain out than it should...I'm using stock Honda filters, and Mobil1 0w-20. The first change at 5K, I didn't know about the problem, so I didn't keep the oil...but for the 10K and 15K changes, I kept the old oil. Vehicle is leased and we have a year left before we can gladly dump it back on Honda, so glad we didn't buy it. Problem with the dilution I think is un-fixable as Honda recalled about 400K CRV's in China with this problem, and even with all the fixes applied...they still have dilution problems, just not as much as before. Stinks! Never getting another Honda because of this...have lost all faith in them. How could such a huge critical problem like this be released into production...its only a matter of time before all those turbos start failing, and engines get destroyed
...Honda says this problem with dilution only happens in cold weather areas, with people who drive short distances...WRONG HONDA!!!! We live in So Calif Inland Empire, we're its hotter than the ninth plane of he_l most of the time, drive long distances 3-5x times a week over and above my wife's normal miles, and always let the engine warm up for a few minutes before driving. From what I've read, because of this problem, Honda isn't even allowed to sell any more CRV's in China, they won't let them because of the dilution problem, and inability to fix it.
We're just praying her car makes it to the lease turn in date. If I we're someone who was going to keep any 2018+ Honda vehicle with a 1.5T engine, I would probably go with 5w-30 oil, and change oil/oil filter every 3K just to be safe. But I would seriously consider just getting rid of the car at all costs, again we are fortunate to have leased our POS 2018 CRV.