We just installed a Best Gasket seal a few weeks ago- - - - -not enough run time on the engine to definitely say it won't leak, but I'd put a few bucks on the "no leak" option if I were a gambler. There's also a sneaky trick to installing the seal that involves a home-brewed tool to pack it tightly into place. One thing they do with that seal is to include a very small dowel pin that gets inserted in a drilled hole in the cap- - - - -to prevent the seal from spinning! I think they might have solved a problem that's been around for decades!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!