I am sure Porsche or Mercedes would recommend an oil that would be "bad" for warranty!
C'mon guys, address the issues:

- Why do most race teams use Mobil 1 and not Amsoil?

- Amsoil does NOT manufacture any of their oil components, including base stocks.

- If it were so good, demand would be greater and you would see Amsoil in all major stores!


Dan B. 96 SE 2.5 auto