Hoʻohana ʻia ka ethylene propylene rubber (ʻoi loa ka binary ethylene propylene rubber) ma ke ʻano he viscosity index modifier (OVI a i ʻole VII) no nā aila hydrocarbon he nui e hoʻomaikaʻi ai i ka lubricity o ka aila ma nā mahana kiʻekiʻe a me ka haʻahaʻa a hiki i ka ʻaila ke hana maikaʻi ma nā kūlana kū a me ka ikaika.
Pono ʻo Ethylene propylene rubber i ka mana mānoanoa kiʻekiʻe, haʻahaʻa ninini ʻana a me ka haʻahaʻa shear stability index ke hoʻohana ʻia i mea hoʻohui hoʻololi no nā lubricants, gasoline a me ka diesel.

Manaʻo:
EPDM:CO 033；CO 034；CO 043；CO 054；