Curious, this thread came up just after I read an article in this months Muscle car review magazine. I thought the
zinc was only important to break in a solid cam but they said you can round a lobe at any time. My engine has 5000 miles on it now but I am looking into something for next
oil change, not sure what yet but this thread is very informative.
Has anyone looked into or used Slick 50, do they still sell it? Years ago my boss had a mild 428 in his truck, we rebuilt the engine and after the propper break in he used the slick 50. after very few miles he had to lower his idle about 100 rpms, I guess from less fricton. Any thoughts?