People here like redline, i've only heard good about it and it seems the majority use it. Another good one is Amsoil which is a real pure synthetic, I personally use Pennzoil ultra which in the US and made readily to the everyday consumer, is pennz's top shelf. I've read somewhere on another board that Ferrari factory fillup uses shell helix ultra. In the states it isn't sold. Mind you shell and pennzoil are ofcthe same maker..mainly why i choose it and its one of the better oils off the shelf of a autostore. It's a group IV oil.
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