[AT] Tranny Lube

[rdhaskell at juno.com]

Hi Steve.  A former student of mine took over his dad's petroleum
distribution business.  He says that 50 wt. mineral based oil is the same
as 90 gear lube.  That is what I put in my '41 B.  My 36 A takes 140 wt.
 
Ron Haskell
rdhaskell at juno.com
Riverside, California USA
http://picasaweb.google.com/RonHaskell

On Fri, 5 Dec 2008 22:11:09 -0600 "The Allen Family"
<steveallen855 at centurytel.net> writes:
> I have a question about transmission lube for my JD A and B.  Both 
> are
> overdue for a change, but I want to choose wisely because I don't 
> want to
> waste any.
> 
> What is the best lube to use?  I have read conflicting information.  
> Some
> sources say to use a GL-5, but others say that some of the additives 
> in it
> are harsh on brass and copper.  I'm not sure that these tractors 
> have any
> brass or copper in their transmissions, but I worry about taking the 
> chance.
> Does anyone know whether GL-3 has the same additives?
> 
> Another source says that SAE 50 oil is the same as SAE 90 Gear Lube, 
> which
> doesn't sound logical, but the source appeared to know his stuff.  
> Can
> anyone confirm?  Does anyone know of a source for SAE 50 oil?
> 
> The quantities involved will cost well over $100 for the two 
> tractors, so
> I'd like to make sure I use the best choice.
> 
> TIA for any suggestions and relevant info.
> 
> The "original" Steve Allen
>
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