Anyone use or have any opinions on the driven joe gibbs break in oil

 

My engine rebuilder contact advised to use on mine. Have yet to fire it up ... In progress of auto to man swap. He stated it had zinc (I think) which was needed for our engine.

 

I used and have in my oil now the comp cams break in additive. Has a high level of zinc which the flat tappet style camshaft needs. You should run it for the first few oil changes. I initially changed my oil at 500 miles , then at 1100. Now I'm at 1700 or so. I'm going to let it go to 3000 on this oil with the additive.