An oil specifically created for positraction differentials. Its additive system has been specially designed to meet the demanding needs of hypoid axles. The special “extreme pressure” and anti-corrosive additives incorporated in HYPOID BPA reduces damage to gears subject to very high loads. The very good anti-foaming properties help prevent oil overflow and losses. Finally, the presence of a friction modifier enables positraction (limited-slip) differential clutches to work without squeaking or jerking.