3vze head gasket failing

Anyone had to replace head gaskets lately? My '91 had a factory replaced engine @ about 90,000. I think it's going again, white smoke, leaking antifreeze. Is there a more permanent fix? Have they changed the gasket set so they don't fail anymore? Do I have to change the anti-freeze mix every year? Is there anything that helps make the head gasket last longer?

Use copper gaskets...