EL-OH-EL indeed chuckles.
There's a whole post that I wrote on the subject, because it's so commonly misunderstood, that's stickied at the top of the forum:
When you buy a quantity of oil, probably the first thing you look for is the SAE grade. But what do these numbers represent; what do they mean? In this post we will explore the fundamentals of SAE J300, which is the standard under which these grades are defined and often a point of considerable confusion.
At its simplest, a multigrade oil is identified by two numbers:
1. The Winter grade, this is the number BEFORE the W
2. The SAE grade, this is the number AFTER the W
These numbers are not related.
Both numbers (grades) represent clearly defined ranges, outlined as...
Besides being needlessly combative and attempting to drag me, what have you contributed lately?