I don't know about Mobil or the new synthetic, but yesterday I switched to ATF 3 in the Mystique MTX. I don't know what the long term effect will be, but in the short term, I love it. Smooth and easy.....

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6