Gents, The oil analysis results comparing the old Mobil 1 15w-50 synthetic (red cap) and the new Mobil 1 15w-50 Extended Performance (gold cap) show the oils to be nearly identical. The amounts of Molybdenum in both oils are the same (82ppm) so there will be no clutch problems with the new oil. The amount of anti-wear additives (zinc and phosphorous) are virtually the same. The amount of zinc in the new oil is down a few ppm's but the phosphorus is up a few ppms. For those of us that fell in love with the old red cap fear not, the new gold cap EP 15w-50 is the same oil.