Ethylene propylene rubber (mainly binary ethylene propylene rubber) hi hydrocarbon oil tam tak tan viscosity index modifier (OVI emaw VII) atan a tam hle a, chu chuan oil chu temperature sang leh hniam a lubricity a ti tha a, oil chu static leh dynamic condition-ah te pawh a thawk tha zawk thei a ni.
Ethylene propylene rubber hian lubricant, gasoline leh diesel atana modifier additive atana hman a nih chuan thickening power sang tak, low pour point leh low shear stability index a mamawh a ni. A rilru a buai em em a, a rilru a hah em

em
bawk a.