<div class="htmlview paragraph"><b>THE Army's need for a universal gear lubricant for cars and trucks, that is, one capable of lubricating hypoid gears as well as other gears and transmissions, led the Ordnance Department to request the CRC to study the problem in an effort to improve the requirements of the present specifications.</b></div> <div class="htmlview paragraph"><b>The CRC group that made the study has come to the following conclusions:</b></div> <div class="htmlview paragraph"> <ol class="list nostyle"> <li class="list-item"> <span class="li-label"><b>1.</b></span> <div class="htmlview paragraph"><b>There is no laboratory test or combination of tests that will accurately predict the ability of a lubricant to protect gears under all conditions of operation.</b></div> </li> <li class="list-item"> <span class="li-label"><b>2.</b></span> <div class="htmlview paragraph"><b>It will be necessary to define lubricants in terms of simulated service tests.</b></div> </li> </ol> </div> <div class="htmlview paragraph"><b>CRC and the Army have now developed two service evaluation tests that appear to give, jointly, a good measure of the dual, speed-pressure function.</b></div>