Originally Posted by Bladecutter
Here's a quick comparison:
Mobil Clean 5000 5W-30 (conventional oil) Flash point is 392 degrees F, Pour point is -27 degrees F.
Mobil Clean 7500 5W-30 (synthetic blend) Flash point is 392 degrees F, Pour point is -44 degrees F.
Mobil 1 15W-50 (synthetic oil) Flash point is 455 degrees F, Pour point is -38 degrees F.
Mobil Delvac 15W-40 (diesel oil) Flash point is 456 degrees F, Pour point is -22 degrees F.
Mobil 1 5W-30 (synthetic oil) Flash point is 446 degrees F, Pour point is -54 degrees F.BC.