Hylomar is working well so far. Not a super lot of miles but nearly 30 dyno pulls and few road trips. It has been togeather now for at least a month. No leaks at all that I can tell. Much better results for me anyhow than the 574 which leaked as soon as oil was put in.I may have done it wrong but there were two of us one with the book checking to make sure the other got all the bolts in and torqued.
Chainboxes with 574 will not retorque easily. The 574 will be in there like rock. If you tighten enough to stop a leak you proably just pressed the 574 into the gasket which will eventually just make things worse. If you didn't use a gasket well thats another story.......
I used it and it hasn't leaked. Pretty sure that if I had been using it for 10 years and still couldn't get it to work I would be using something else by now.
How much does an F-16 cost these days.