Further Considerations of Low-Temperature, Low-Shear Rheology Related to Engine Oil Pumpability-Information from The Scanning Brookfield Technique

<div class="htmlview paragraph">The Scanning Brookfield Technique (SBT) is used to examine the nature of air-binding, pumpability problems. Causes of the failure of the first ASTM pumpability test methods are examined and used to caution present and future assumptions subtly but markedly affecting test method development.</div> <div class="htmlview paragraph">The engine itself may, by its design, be super sensitive to the occurrence of even moderate oil gelation, raising the question of gelation-prone oils vs. gelation-sensitive engines.</div> <div class="htmlview paragraph">Dialysis experiments showed that oil additives could sometimes cause gelation as well as prevent it.</div>