I have used chrome rings for the last couple of motors I have built, including the 261 I just put into my 57 this past August. Use regular oil, not synthetic, I did not dip my pistons, I oiled them, installed the Pistons, couple of good squirts of oil in the cylinder, install the head, build the motor. I used bradpenn 10w30 breakin oil, fired motor up to 2500 rpm for 30 minutes, various rpm between 1800 and 2500 for another 30 minutes. Kept temperature to 190 degrees max when breaking in. motor broke in just fine and runs perfect. Don't worry about using the chrome rings, you will be fine and they will break in fine also
