Talk about pent up anger!!
Calm down man. If you do not like Amsoil, then don't use it. I was merely discussing my use of PI in my car for nearly 40,000 miles. I am not an Amsoil Dealer, and have no interest in trying to sell their products here or anywhere else.
If you look your car up on their site you will see not just what they recommend, but also what they do not recommend.
For example, they recommend only BMW supplied transmission fluid and spark plugs. I also called them about their octane booster, but they told me that it would degrade the catalytic converters. They could have just sold it to me.