If you mean W as in 10W30 motor oil, it stands for Winter. The thickness of those oil changes with the temperature- they are not as thick (viscous) in cold weather, but get thicker as they warm up. Makes it easier to start the engine in cold weather.
galleano bottle with spout and electrical stand
W. W. Lewis
No, it takes 10w30 or straight 30 weight.
william
wonders of the world
Walker
A+W stands for Allen and Wright, the founders of A+W.
W
Tungsten
seven wonders of the world
"W is for Witness".