39 ford shocks

[jon laing]

What specific oil should be added to stock shocks? Jon L.

[Seth Swoboda]

Shock oil. It can be purchased at most any of the vendors.

[Fe26]

First you must ascertain what fluid is already in your shocks. There are three types.
Mineral oil, Glycerin or Caster oil. You can tell by the odour which one you have. The mineral oil is just light hydraulic oil, the other two you can get from a drugstore.

[jon laing]

Apparently shock oil, which I understand is a light hydraulic oil, is readily available. Why would anyone use glycerin oil or caster oil? Sounds like determining which is in the shocks is a bit of a challenge. Jon L.

[BILL WZOREK]

jon

I emailed you and posted a old thread about how to ID what shock oil is in your shocks , A lot of the oils don't mix , in some case's it will turn the existing oil to a tar like mixture.
That is why it is important to ID your Oil

[jon laing]

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Thanks Bill: My smeller no longer works so I will try to find someone who can smell. Apparently there are at least 3 types of mineral oil. I will face that issue if i have mineral oil. Appreciate your help. Jon L.

[BILL WZOREK]

Unfortunately I have not found a good taste test other then
yuck , YUCK , 3 X YUCK

You a welcome to try this if you would like .

" My smeller no longer works so I will try to find someone who can smell."

It kind of reminds me of HERE TRY THIS MILK >>>>>>


DOES IT TASTE BAD TO YOU :::::::

[jon laing]

Is it possible to drain whatever oil is in shocks and replace with stock shock moil? Jon L

[ford38v8]

Originally Posted by jon laing

Is it possible to drain whatever oil is in shocks and replace with stock shock moil? Jon L

Drain and replace?

Or rebuild and use hydraulic fluid?

[BILL WZOREK]

Originally Posted by jon laing

Is it possible to drain whatever oil is in shocks and replace with stock shock moil? Jon L

Ok here go's I will try to explain the best I can.
There are two distinctive chambers / The reservoir that stores extra oil /
Then there is the chamber that actually makes the pressure / there is a check valve between them. / When the arm moves up & down moving the shaft inside / For lack of a better description the shaft has a T on the end. /
so as the shaft turns it will create pressure on one side & suction on the other ( All of this happens in the operating portion of the shock )
Now here is where the check Valve comes into play.
The side that is making the pressure pushes the check ball shut sealing it off.
The suction then pulls the check ball opening it to the oil reservoir / if the chamber requires any oil if takes it at this time.
The ball in the check valve is aprox 1/8" & moves about 1/64" back and forth. taking a very very amount of oil.

So you can pull the fill plug and drain the reservoir & that will drain about 2/3's of the oil. But this will not drain the pressure side of the shock.

Keep in mind not all oils mix! / some mix creating a tar like substance.

This comes back to the original question
" WHAT TYPE OF OIL IS IN MY SHOCK "
You still have to know what's in there before you can change it.



I HOPE THIS HELPED IN SOME SMALL WAY