???I am a fan of silver age superman and recently supes is getting silver age level of power back so is there adny example of him breaking the time barrier after 1986?
Faster than light is not the same as breaking the time barrier, which, as far as I know, is very rare post crisis. The Flash has gone thousands of times faster than light without going back in time. Most of the time when Superman does it, it's just because SF writers have no sense of scale. Some planet trillions of lightyears away? Superman can fly there in seconds, no problem. Yeah right.
In Our Worlds at War (which I think came out in 2001), Superman sun dips and then heads back to the beginning of time.
I don't think he time travelled under his own power, did he? I thought that was a Boom Tube.