I use SuperTech oil in my cars, and I have for a while now. It will work just fine...it has been widely debated over on the Supra forums by people that use it in high-stress very high performance turbo engine applications, and I haven't heard one bad thing about it.

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles