[Farmall] Gear Oil

[Tom Bonjour]

I have problems finding GL-4 gear oil. Everything I find is GL-5. I 
understand that GL-5 is harmful to bronze bushings. Are there any readily 
available 90W GL-4 gear oils?

Tom

-----Original Message----- 
From: Mike Sloane
Sent: Thursday, December 01, 2011 12:31 PM
To: Farmall/IHC mailing list
Subject: Re: [Farmall] Gear Oil

Petroleum technology has come a very long way since 1928, and I think
you will find that generic 90 weight gear oil should work just fine. It
isn't as if your machine will even see a lot of long hard hours of work
that might put a strain on that mechanism.

Mike

On 12/1/2011 8:20 AM, Milo wrote:
> What are you folks using for gear lube in the older units?
> I'm restoring a 1928 Russell Road Grader that uses a 10-20 (I-20)
> McCormick Deering for power.
> I'm using the cast iron "tub" from a 1934 10-20, as the original one on
> the grader was broken
> at the wheel hub on the right rear.
>
> Also using the bull gear and some of the transmission gears from the 34.
>
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