On data of acoustic method, it’s discovered that dependence of integral index of friction (D) from loading pressure (P) under using of best lubricant with addition of nanostructured aluminium powder after treatment by mixture of alcamon and triamon vapour, doesn’t consist a characteristic peak under small pressures. This dependence is smooth, plain curve and in pressure range (15-55 MPa) is correctly described by equation D=8,5e^0,082P. Alteration of D on exponent low takes place under using of analogous addition on copper powder base and powder copper, which is processed by alcamon, too. Those facts testify about liquid mode of friction.