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  1. M

    PAOs and base stock goups

    Are groups V base stock oils always better than group IV and so on? What about oils that are Group III synthetics (Like Castrol SYNTEC) that a lot of people seem to like? Is SYNTEC really worse than Royal Purple, AMSOIL, Red LIne, Mobil 1 or Lucas just because these oils use higher group base...
  2. M

    "Premium synthetics"

    There seems to be a lot of buzz around "premium synthetics" such as Royal Purple, AMSOIL, Lucas and Red Line. Can anyone tell me why people are switching? Is it the extended drain promises or the power gains? What kind of people are switching to these oils?
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