Add to ORKGO/)licrrl iirtciferoi~~ctiy is used to stz~lly the film thickness of pccrses, colrl of soap srcspeiuioiu and of their base oils in point or lii,e cwrloct. 111 mze cllse, sa?tiples were taken born a grease-lubriccrtc(l p111.i~~c-Occiring test c$/.er 5%- and 25-million revolutions. The effcc/I'~~c ~~i.scosity of (1 pease t~itder the very high shear rates of the order if 1/2 X lo- " S-I eizcoz~~zl~~~ed in rolling conlack can be cc1./c11ln/ccl