RE: 4-Stroking an ABC engine while break-in
Hi!
Dar...I have enlarged the picture and I agree it's not that much varnish ...but it still is varnish. And varnish is not good!
You don't get varnish if you run all synthetic oils.
But as it is not that much varnish and as it is in a sport engine you can live with it, it will be no problem.
Regards!
Jan K