[mike657894]

Forddan Im thinking of following your lead here. I have a few questions. Did you have good 600w from the suppliers before the 1500? I just put macs 600 in trans and rear. less than 100 miles yet. I can get some silent shifts if I hit my double shift well enough. In your original post you make it sound like your trans now shifts like a syncro unit because of this oil. Is it that good? Im leery as I put standard modern rear end oil in my axle when I got it and developed a slight low speed noise back there.