A quick inspection of the cST of Energy Conserving oils and non-EC oils at temps well above 212F/100C is eye opening...
Even within a grade (let's say 40W) the Energy Conserving oils tend to have cST on the lower end of acceptable range, and non-EC on the higher end. That gap only widens up as temps get higher and higher.
As long as the wear parts of your air-cooled engine stays within 212F/100C, then you're right, there's no wear difference.
Even within a grade (let's say 40W) the Energy Conserving oils tend to have cST on the lower end of acceptable range, and non-EC on the higher end. That gap only widens up as temps get higher and higher.
As long as the wear parts of your air-cooled engine stays within 212F/100C, then you're right, there's no wear difference.