Pulled the fill plug out today and found that the magnetic plug had just a little bit of the typical metal residue on it, nothing serious. Fluid level was good and looked clean. I put in the additive and took it out for a good 30 plus mile drive, Hwy and city roads. Im happy to report that it seems like the shudder has gone away!!
Im sure the mainteness record shows they put this additive in, now Im wondering if I should go through and redo the transfer case and front diff? I thought I read that both of those needed a special additive as well?
A big thanks to going out to you Mike!!