The improver is mainly applied in improving and increasing lube oil viscosity indexes.

The improver is mainly applied in improving and increasing lube oil viscosity indexes.

a) T-612,T-612A are applied in making the low grade lube oil thickened in the single stage of low grade lube production; the shearing stability is lower than other brands of improvers.

b) T-613,T-613A are suitable for making the moderate and low grade lube oils thickened, e.g. to improve the viscosity indexes of lube oils for CC.SD grade internal-combustion engines; its shearing stability is better than T-612.

c) T-614,614A are applied in improving the viscosity indexes of moderate and high grade lube oils and making them thickened with an excellent shearing stability, chiefly preparing the lube oils of high grade multi-stage internal combustion engines.

Viscosity Index Improver