re
I got the 107 in mine, pulls ok.
The only oil that I know of with zinc in it is the shell fire and ice. this was told to me by builder a couple of years back, he said to run that oil for break in then switch over.
Although I was like what? hmmm crap oil, I tried it on
the last 2 smallblocks i slapped together and ran it for break in with no problems.
But i thought zinc was banned...maybe its just flavor crystals added to it.
I'd like to find out more myself
mike