Engine Oil Pour Point

 Pour point is another good indication of how pure the oil is.  The lower the number the better!  It proves that there is less contaminant in it that may impede the flow.  The better the pour point, the better the protection at start up.   Paraffin’s (waxes) are present in Conventional oils as well as in blended synthetics, bringing that pour point much higher which starve the top end of an engine at cold-starts.  AMSOIL  is a true 100% Synthetic Oil.   AMSOIL SIGNATURE SERIES 5W-20 & 5W-30 have a pour point of -58F.  AMSOIL SIGNATURE SERIES 0W-20 has a pour point of -63F!  I’ve yet to see a lower for a Passenger Car Motor Oil.   When using AMSOIL, you are receiving the best protection.  

https://www.amsoil.com/c/gasoline-motor-oil/3/?zo=5293167