Quote:
Originally Posted by BRENT in 10-uh-C
You may be correct but I am pretty sure the S/B makes reference at least once to the 600W as being the viscosity. The sentence was something like "the gearbox must use a lube equal to 600W.". It has been argued over and over and I don't know the answer, but I think the compelling argument has always been if 600W was a trade-name and not a viscosity, why wouldn't the Ford engineers have specified the necessary viscosity since '600W' was not Ford's own tradename?
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Thanks for the response. This certainly is confusing and has been batted about for decades. Maybe I'm wrong, certainly won't be the first time. But, I thought the general consensus was 600W was a designation.
I've tried them all in the transmissions. I used what was said to be 600 weight and found it too heavy, 90 weight I felt was a bit light but doable.
As a kid we always used a barrel of 140 weight for everything until things changed to 90 weight. [ then we needed 2 barrels hanging around]
Its also my understanding that the grease fitting on the steering box was for the use of heavy oil [600W] pumped thru a grease gun. We always kept a gun full of 140 to top things off. Its easy to see why fellas would pump that box full of grease though.