TO 20 FLUID CAPACITY

I HAVE 2 QUESTIONS.
1.Is the motor oil capacity 5 quarts and the hydraulic/transmission fluids 5 gallon?
2.What do you use to flush the Hydraulic well? and do you leave it in or drain it out?
 
Engine is 5 qts, 6 qts with new filter. Trans/hydraulic is 6 gallons. And most of us have switched to motor oil for the hydraulics. The GL1 mineral oil would be correct, but, that oil attracts water and it will become milky and can give you problems in the winter as it will freeze.
 
Interesting is that this hydraulic system was also used on the Ford 9N and 2N. Go over to the Ford 9N,2N,8N board and you get different info.
GL-1 doesn't shift worth spit in cold weather. Motor oil keeps debris in suspension according to John(UK) and should not be used.
I believe that that leaves one fluid not mentioned. I suggest you go see what the Ford guys are running.
I have yet to change the Fergy again and it is due once more.
 
Hey Bruce, it looks like the Ford oil is also mineral oil. I know quite a few on this site have used 5-20 diesel oil. Having shifted over to motor oil years ago, I have yet to have a problem and regularly change it every two years without issue.

Tom
 
Well, I believe John(UK) was considered the consummate expert on these old machines.
He hasn't posted in a very long time and it is suspected he has passed by now.
He explicitly told me not to use motor oil.
Now if you have as much experience as he did, I believe he worked on the factory line back in the day, I will be happy to defer to your vast experience.
I, on the other hand, never did work on the Fergy assembly line or have been around these machines more than about 20 years so far. I am a babe in the woods with regards to these machines.

Now if John(UK) is correct, you shouldn't have a problem until you have a problem.
Then if you have a problem you can say to yourself, could'a should'a.
 
The other consideration might be, do your brakes work? If you have NOT drained the oil, pull the lower bolt on the PTO side cover.
There might be a chance that the PO only filled the hyd fluid up to that level to keep fluid to a minimum inside the axle shaft/possibly leaking past the axle seal onto the brakes.
Now, if the brakes already don't work, chances are the seal is shot and fluid is already leaked onto the brake shoes.
If the brakes are working, either the seal is still good, the PO replaced the seal or installed 'Sure Seals.
 
I remember Johns comments too, and really miss his knowledge. I shifted to the motor oil after reading that others had already done it. Living in the northeast it was a pain in the butt in the winter to get the fluid warmed up with a block heater just to plow the driveway.

Im sure if I was in a warmer climate I would still have the mineral oil doing its job.

Tom
 
Here is what John (UK) had to say in 2015

John(UK)
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Joined: 24 Oct 2007
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PostPosted: Sun Dec 20, 2015 8:14 am Post subject: Re: Oil Capacities for the transmission/ rearend. Reply to specific post Reply with quote

Correct capacity is 6 US galls. BUT in these old tractors, often the seals on the Axles shafts are worn and the oil can run through. Fill the Transmission until oil JUST runs out of the bottom screw hole on either of the round side plates. This will keep the oil away from the leaking seals and off the Brakes.
Use Multi-grade 10W/30 this does not get as thick and heavy as the original grade of oil in cold weather.
John
 
Her Fergy is running Delo 15/40 throughout. Make that was. I am about to drop an Everett into it, after I get the drive train done on my '94 F350 with the 7.3 idiT. That will be the next oil change on that Fergy machine. The truck is currently on the front burner ahead of everything else around here.
 

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