Quote:
Originally Posted by Licensed to kill
The "W" in oil designations is for "winter" not "Weight". I use Chevron Maropa 680 in my gear boxes, corn head grease in steering boxes.
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Thats kinda misleading. W stands for weight, but, the W meaning winter means that the number before the W such as a 10 means the oil flows like a 10 weight oil when cold. The number after the W such as 30 means the oil has the film strength of a 30 weight.
Its the same oil viscosity.