HG material and torque spec not updated...Toyota should have stepped up to the plate.
As far as people getting 100k mi. out of them. Not too many. Most people had problems far earlier than that.
My car has been in my family since the day it rolled off the showroom has always been properly maintained, and blew a HG at 38k mi. It has a metal head gasket now.
As far as people getting 100k mi. out of them. Not too many. Most people had problems far earlier than that.
My car has been in my family since the day it rolled off the showroom has always been properly maintained, and blew a HG at 38k mi. It has a metal head gasket now.