Originally Posted by pizzaguy
But before I go, one thing: Could you have included 0W40 in your chart?
Can't find the cold pour point for Mobil 1 0w-40.
The Flash point is 446 degrees F, which is the same as the 5W-30.
Chances are, the 5W-30 and 0W-40 are made from the same stock, with a couple different additives to give the 0W-40 the edge in lower temps, and for meeting all the different specs that it does.
There is a saying I kind of want to bring up in the terms of Mobil 1 0W-40, because of how many standards it has to meet all at the same time:
Jack of All Trades, Master of None.
I don't use it, but I have my reasons why which I have pulled from lots of other people's research, and oil analysis results.
BC.