my standard T3 turbo holds at 9.5- 10 psi and there is no smoke or oil consumption BUT I have noticed some radial shaft play and no axial play. Its the original turbo on my sapph 4x4 which has now clocked 80K. its got mobil 1 5w/50 in it but will be changing over to mobil 15w/50 next oil change.

is this play a sign that a refit is due? i have been told that the clearance will disappear as soon as oil flow & pressure floats the bearings/shaft.