This web page indicates that CR tested Klasse.
CR mentions that it gave impressive shine but CR did not tell anything about its durability. If Klasse had lasted much longer than NuFinish, CR should have mentioned that.
http://forums.evolutionm.net/archive/index.php/t-93177.html
Strange: the poster says it is from '98 CR rating but it has TurtleWax Finish 2001 on the list.
CR mentions that it gave impressive shine but CR did not tell anything about its durability. If Klasse had lasted much longer than NuFinish, CR should have mentioned that.
http://forums.evolutionm.net/archive/index.php/t-93177.html
Strange: the poster says it is from '98 CR rating but it has TurtleWax Finish 2001 on the list.