Dodge racing did some interesting research into the "best" oil a while
back... To not reveal too much (kinda like my sources), let me assure you
that if you are running Mobil 1 in a 10/30 app you are running the "best' for
your turbo motor (and Red Line, castrol synthetics are fine too, 10 30 is the
keyword here)... And if you find it's running too hot? another oil cooler
is the answer... More than just thinkin here........
87 5ktqRS2 320hp Mobil 1 10/30
86 5ktq stock Mobil 1 10/30