Hydraulics slow after changing oil

jjk454ss

Member
I had the Hyd fluid changed, used Mineral Oil 80 weight from NAPA. Now my hydraulics work extremely slowly. Trying to raise the backblade takes much longer than before. Is something wrong? Is it heavier oil maybe causing it? Any recommendations? It's slow enough I hate to plow with it this winter, I'm assuming the cold will make it even worse.
 
I changed the transmission hyd oil in my TO35 Ferguson

I used the same oil Napa 80/90 weight non detergent mineral oil which is recommended for my tractor,

It does the same thing, on a cold morning it is slow and jerky, but after the tractor warms up the lift works good,

Many just use regular 10w30 motor oil and say the lift works better,

I guess back in the day when these tractors were new, they pumped this oil just find on a cold morning.
Guess you could drain some of the mineral oil out and add a thinner oil to the sump,

but I would not know what to tell you to add, you need to ask a Ford 8N specialist about this.
 

Ok, thanks. I didn't let it get really warm. But, it was probably close to 50 degrees today, I have to have issues when I'm plowing at its 10 degrees out. I oath in the garage, do they make heaters for the Hyd fluid like they do for the motor oil?
 
(quoted from post at 19:55:58 11/14/15) I had the Hyd fluid changed, used Mineral Oil 80 weight from NAPA. Now my hydraulics work extremely slowly. Trying to raise the backblade takes much longer than before. Is something wrong? Is it heavier oil maybe causing it? Any recommendations? It's slow enough I hate to plow with it this winter, I'm assuming the cold will make it even worse.

I'm not aware that NAPA sells an SAE 80 gear oil. Are you SURE that is what you put in and not SAE 90?

TOH
 

No, I'm not sure. Your probably right, I don't have the bottle to double check, but I'm sure your correct.
 
(quoted from post at 21:16:44 11/14/15)
No, I'm not sure. Your probably right, I don't have the bottle to double check, but I'm sure your correct.

This is the 21st century and there is no need to live with slow hydraulics. A good universal tractor transmission fluid is inexpensive and an excellent choice for year round use in the N-series. Run down to your local TSC and pick up a 5 gallon pail - roughly $40.

TOH

oil.jpg
 

So the oil is the issue? I hand to do this because it's brand new, but guess for $40 it's probably the way to go. Can the oils mix if I just drain most of it out?
 
(quoted from post at 21:36:11 11/14/15)
So the oil is the issue? I hand to do this because it's brand new, but guess for $40 it's probably the way to go. Can the oils mix if I just drain most of it out?

If the oil you put in was gear oil yes they will mix just fine.

TOH
 
this is the oil from NAPA that I put in the transmission/hydraulic system of my old tractor, TO35 Ferguson, Multiguard GL-1 90 weight mineral oil

however your Ford may have different requirements.

many on the forum say to use 10w30 oil in the system, but the main difference is the 90 weight GL-1 mineral oil is a (non detergent oil) that lets the dirt particles settle to the bottom of the sump and are carried out when you change the oil. also to be used as some of the transmission bearing are bronze bearings and the new oils will attack the bearing (I do not know about this)

detergent oil, like the newer tractors use keep the dirt particles suspended in the oil, so they are cleaned out when the oil passes through the hydraulic oil filter.

over in England they can buy 10w30 or multigrade non detergent oil and that is what most of them use, here I have not been able to find multigrade non detergent oil.

so I just live with the slow hydraulics in the winter.

I guess you could look for a electric heater dip stick, stick it into the hydraulic oil dip stick hole and plug it in, if it works it would keep the oil warmer, they might make a magnetic base heater to just attach to the side of the housing.

they used to make them as I had one for the motor oil on my old D14 AC
a205857.jpg
 
In my 2N, I have used the UTF that meets Ford specification M2C-134D for years and it works well. Lifts without much trouble in below zero temperatures, holds the lift up OK in warm weather. If your lift is leaky, you may not want to use this as it will make it leak faster.
 

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