My first UOA was with Chevron Delo 15W/40 (1250 miles) and the copper and silver were high, but Blackstone said it was probably from breaking in a new engine.
Now my bike has over 7500 miles, and I went 2500 miles on Rotella 15W/40, but my copper and silver went up! Aluminum and iron look good. The bike is stock, and it does have an oil cooler. Do I have a problem?
Now my bike has over 7500 miles, and I went 2500 miles on Rotella 15W/40, but my copper and silver went up! Aluminum and iron look good. The bike is stock, and it does have an oil cooler. Do I have a problem?