I remember in the 1960s - 1980s where carbureted cars, especially during colder months, had huge fuel dilution issues. I ran everything from 5w30, 10w30 to 10w40 and didn’t give it a second thought. 3-4K OCI’s. Can anyone point to a study or UOA on newer DI cars where damage has been caused by Fuel Dilution? It seems to me that the manufacturer’s have done their homework and so have the oil companies for newer cars. Fuel Dilution, even when raising the oil level, has no detrimental effect on engine wear. Am I wrong???