Is that a statement or a question? the tstat won't begin to open until the temp gets up to 160 which takes a considerable amount of time.you are kidding yourself you are actually protecting yourself. why not just do it the proper way? It does not take any longer!!!!!!!
you can do what you want but in no way think you are doing it correctly because you only get down to 25 degrees. You can't put out a blanket statement and feel its good for everyone. its this stuff that gives people a false sense of security until they have a 15000 motor repair bill,