by SD | Mar 23, 2011 | Default
Viscosity at 100°CViscosity at 40°C Motor oils and hydraulic oilsISO grade SAE grade range (cST)ISO grade range 53.80-*3228.8-35.2 104.10-*4641.4-50.6 205.60-9.296861.2-74.8 309.30-12.4910090.0-110 4012.50-16.29150135-165 5016.30-21.89220198-242...
by SD | Jan 23, 2012 | Default
by John Sander, VP Technology, Lubrication Engineers Inc. Abstract: Simply stated, viscosity is defined as the internal resistance of a fluid to flow. That doesn’t sound too difficult, does it? Unfortunately, new temperature, speed and pressure demands on lubricating...
by SD | Mar 21, 2011 | Default
Chapter One Understanding what viscosity grades mean can be confusing. The average driver just tries to follow what is in the owner’s manual – this is a good practice. Some owner’s manuals allow for different grades based on the predicted operating temperature. For...
by SD | Mar 21, 2011 | Default
Chapter Two – Oil Grades In chapter one we talked about how oil changes viscosity as the temperature increases and the challenge it is to keep close to the right operational viscosity regardless of the temperature. If the operating temperature is 212F and the...
