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on why car manufacturers recommend different engine oils for the same engine in different countries. The summary is that in the manufacturers of newer vehicles recommend 0W-20 oil in the U.S. to comply with the EPA fuel efficiency regulation (CAFE standard), whereas, elsewhere in the world, the manufacturers recommend 5W-30 for better engine durability. In addition, vehicles in hotter climates will breakdown a thin oil (the 0W-20) more quickly than a thicker oil (5W-30). I live in an area that gets 4.5 months of 90+ F temperature annually.
Do other member of this forum who live in hotter climates use 5W-30 rather than the Honda-recommended 0W-20 oil?
welcome to the forum. Just info. I purchased a 07 base Fit, first 100k miles oil change by Palmdale Honda dealership. there after i did my own oil change. car started with 5w-20 at 285k( 2020) I gave this car to my grandson in Idaho, still running still using 5w-20. mobil. oil burn from new 1 qt per 7k miles.
I recently purchased a 2021 EX-L. I recently switched to Castrol 5W30 Synthetic at just shy of 32,000 miles. My Subaru experience with fuel soaking soured me on 0W oils (not to say that the CR-V will never experience that). We also switched our 2014 BMW X3 to Castrol 5W-30 synthetic as well. I am of the opinion that the 5W offers better viscosity, and my mechanic (former certified BMW technician) agrees.
I recently purchased a 2021 EX-L. I recently switched to Castrol 5W30 Synthetic at just shy of 32,000 miles. My Subaru experience with fuel soaking soured me on 0W oils (not to say that the CR-V will never experience that). We also switched our 2014 BMW X3 to Castrol 5W-30 synthetic as well. I am of the opinion that the 5W offers better viscosity, and my mechanic (former certified BMW technician) agrees.
If you mean oil dilution and you have a GDI + Turbo engine and you live in a warm/hot climate then Bimmer Guy makes a good case. Another path is more frequent oil changes.
However, the OP has an Atkinson Cycle GDI engine. Mine is an Atkinson Cycle but no GDI.