Been driving Hondas for many years, when they were port injection, ran the reccomended oil, 5k intervals, no problems. Had a 2019 Civic Touring Coupe 1.5t, ran M1 0W-20 AFE, same deal, 5k intervals, UOA's were perfect.
Got a 2020 CRV EX-L 1.5t, started the same regimen, 1st UOA showed thinning out of grade by 3k, oil rising on the stick, rinse and repeat, same deal with the Honda MM showing 60-70%. After consulting my dealer and my service advisor, as well as the Honda Certified Master Technician who always services our cars, they advised going to 0W-30 AFE and changing at 3-3.5k, that they see a LOT of this in CRV's. UOA at 3k shows the 0W-30 thinned below grade at 3k, but still within range of a 0W-20. I'm sure there are a crap-ton of 1.5t's out there with 0W-20, changing at reccomended intervals still running, but an oil thinned below grade at 3k can't be beneficial for long-term durability. So that's my regimen for our 2 CRV's 3.5k intervals with 0W-30 AFE. My theory is the pressurized intake combined with low-tension rings in a naturally cool-running engine is the root cause of the dilution. Lately the Mobil1 0W-30 AFE has been difficult to source so I'm considering switching to M1 5W-30 EP, as it's more easily available locally The 0W-30 actually has a higher base viscosity than the 5W-30 by a small margin but should still work with the shorter intervals I'm doing. Not terribly concerned with low-temperature flow and pump ability with the 5W-30 as temperatures here rarely get below 10f. Belong to another forum where any discussions of CRV's oil dilution issues are immediately shut down as the moderators insist that its no longer an issue as Honda has "solved" it. IMHO, not so much. Honda specs the 1.5t for 5W-30 in many other countries, here, I believe it's all about the CAFE ratings. Have noticed little, if any, change in mpg with the 0W-30.
Got a 2020 CRV EX-L 1.5t, started the same regimen, 1st UOA showed thinning out of grade by 3k, oil rising on the stick, rinse and repeat, same deal with the Honda MM showing 60-70%. After consulting my dealer and my service advisor, as well as the Honda Certified Master Technician who always services our cars, they advised going to 0W-30 AFE and changing at 3-3.5k, that they see a LOT of this in CRV's. UOA at 3k shows the 0W-30 thinned below grade at 3k, but still within range of a 0W-20. I'm sure there are a crap-ton of 1.5t's out there with 0W-20, changing at reccomended intervals still running, but an oil thinned below grade at 3k can't be beneficial for long-term durability. So that's my regimen for our 2 CRV's 3.5k intervals with 0W-30 AFE. My theory is the pressurized intake combined with low-tension rings in a naturally cool-running engine is the root cause of the dilution. Lately the Mobil1 0W-30 AFE has been difficult to source so I'm considering switching to M1 5W-30 EP, as it's more easily available locally The 0W-30 actually has a higher base viscosity than the 5W-30 by a small margin but should still work with the shorter intervals I'm doing. Not terribly concerned with low-temperature flow and pump ability with the 5W-30 as temperatures here rarely get below 10f. Belong to another forum where any discussions of CRV's oil dilution issues are immediately shut down as the moderators insist that its no longer an issue as Honda has "solved" it. IMHO, not so much. Honda specs the 1.5t for 5W-30 in many other countries, here, I believe it's all about the CAFE ratings. Have noticed little, if any, change in mpg with the 0W-30.