The only problem with the oil is its volatility-- which is extremely high.
The Amsoil guys are going to make fun of this oil by saying that its volatility is no better than a conventional oil, which is true.
Even Valvoline Synpower has significantly lower volatility than this oil. In the newer Direct Injection platforms, such as the GM 2.4DI and 3.6DI, low volatility is extremely important for reduced deposits.
So, while the detergency may be high, given the high volatility is this still a good oil?