Extreme pressure additives deliver outstanding high pressure performance, load carrying capacity and durability for towing and hauling Daily protection gear lubricant helps prevent noise and chattering, while protecting gear teeth from wearing out prematurely Exceptional high and low temperature protection ranges from 5F to 446F for dependable year-round coverage Fights rust and corrosion with corrosion inhibitors and safeguards against impurities, oxidation and thermal breakdown Meets or exceeds API Services GL-5 and non-synchronized manual transmissions calling for GL-4 American made and formulated, from the Original Motor Oil brand trusted for more than 150 years