[AT] Tractor Fluid (OT, only maybe)

[Mike]

Steve, if you don't get your answer here, I've found a lot of 
information on this site, http://www.bobistheoilguy.com
Some real knowledgeable guys on there.

Mike M

On 12/7/2013 8:10 PM, Stephen Offiler wrote:
> I've got a 1991 Ford 1520, a Japanese-built 23HP diesel 4x4 hydrostatic
> from approx 1991, just before Ford sold to New Holland.  A few weeks ago I
> did a 1000-hr major maintenance including hydraulic fluid change.  I've got
> the original service manual, which calls for "Ford 134" fluid.  The only
> other reference in the manual is to Ford part numbers 1GM-134C (1 gal) and
> 5GM-134C (5 gal).  Searching around the net, I concluded this stuff must be
> Ford M2C134x fluid where the x is like a revision, starting with A which
> apparently was used in the 8N era... hence, this really isn't all that OT
> after all.  Looks like they were up to rev C in the early 1990's based on
> what is called out in my manual, and it also looks like the modern standard
> is up to D now.  If I got any of that wrong PLEASE jump in.
>
> I ended up purchasing Coastal 303 Tractor Fluid, which I was a bit leery
> about, until the sales guy pulled out a multi-page document from behind the
> counter that listed a wealth of detail on Coastal 303, including
> compatibility with the Ford M2C134D spec.  OK then, sold.
>
> The problem I am having now is that the fluid seems too viscous.  As the
> cold weather arrived, I immediately noticed that the loader lifted slowly
> and the bucket roll was almost ridiculously slow.  Not long after that, it
> literally blew the gasket off the hydrostatic filter.  My first clue was
> copious amounts of fluid pouring from the filter area, and once I removed
> it, I observed the gasket was out of place.  I tucked it back in, tightened
> the filter up real good, and it was OK for another couple weeks.  Just
> today, same thing, it's pouring out the filter gasket again.  I am
> concluding that the fluid is too thick, the flow is too slow, building
> pressure on the return side (filter side), and that's what is blowing the
> gasket.
>
> If I got all this right, that means Coastal 303 is NOT so very equivalent
> to Ford M2C134D after all.  Does anybody have any knowledge of these
> fluids?  What do I really need to be shopping for?  (I don't know where or
> IF I could even find genuine Ford fluid any more)
>
> Thanks in advance.
> Steve O.
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