This am was jacking front wheel up to change disc ,when almost up the lower cylinder of the jack split. Fortrunately I have stands under and it only dropped an inch or so..No warning. just goes to show .you cant be too careful
I've never used anything less than a 3 ton Pro. jack with 6 ton axle stands myself with Range Rovers and their family. Seen one slip off a 2 post lift once. Not pretty.