Author Topic: Power steering oil?  (Read 3084 times)

Offline goutoe

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Power steering oil?
« on: December 10, 2012, 08:08:28 AM »
My power steering fluid level looks to be a little low, it looks like motor oil definately not ATF how can I figure out what type of oil it is? I am not having any steering issues no leaks, Im just trying to figure out what to use if I ever need to add. How often should you replace the filter? Thanks.   John.
John & Linda 1977 AM General 6V92 turbo Detroit 3 Speed allison, 40 ft.

Offline Lin

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Re: Power steering oil?
« Reply #1 on: December 10, 2012, 08:22:58 AM »
When I first got our bus, it needed PS fluid.  I used ATF because that's what I had always used in other vehicles.  I still do and I do not have any issues.  However, I believe that many use 30 weight motor oil.  I just have not felt the need to change over, but if you have motor oil in there, I would stick with it.
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Offline Frank @ TX

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Re: Power steering oil?
« Reply #2 on: December 10, 2012, 09:10:06 AM »
Goutoe,
I have an MCI 9 with a 6V96.
In the book it calls for 10 weight motor oil.
I couldn't find 10 W so I'm using 15W30 motor oil.
No problems for the past 12 years.
Frank

Offline PCC

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Re: Power steering oil?
« Reply #3 on: December 10, 2012, 09:12:15 AM »
Mine uses 5W-30 for both hydraulic and power steer.

Just wish it was easier to check and add !!
For some, patience is a virtue.
Dealing with me, it is required.
Thank God - He is always patient.

Online luvrbus

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Re: Power steering oil?
« Reply #4 on: December 10, 2012, 09:18:50 AM »
Most of the transit authorities in the cities used hydraulic oil like the 303 just about anything will work as long it is non foaming oil
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Offline gus

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Re: Power steering oil?
« Reply #5 on: December 10, 2012, 12:05:38 PM »
Depends on your PS system.

If it is original the manual will tell you.

4104 original uses Dextron.

My Sheppard conversion uses regular 10W-40 auto motor oil per the factory.
PD4107-152
PD4104-1274
Ash Flat, AR

Online luvrbus

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Re: Power steering oil?
« Reply #6 on: December 10, 2012, 01:25:33 PM »
303 hyd oil is a universal type oil it even works in a Allison the ,15/40 is used because of the gear driven pump only reason Sheppard use it,Gus where do find the old Dexron for a 4104 power steering it hasn't been made in 20 years 

You need a manual for this century about the Sheppard steering and oils mine shows over a 100 different ones including Dexron and  the HF32 (303) hyd oil
« Last Edit: December 10, 2012, 01:42:54 PM by luvrbus »
Life is short drink the good wine first

Offline goutoe

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Re: Power steering oil?
« Reply #7 on: December 10, 2012, 03:33:08 PM »
my steering gear is a sheppard it is not original equip. on my bus, I dont think it is hydralic oil. it looks more like motor oil, I think I will use a multi weight  motor oil non detergent, Actually I dont need to add much I guess I will give it a try and see what works best, thanks guys for your input.
                                                      John.
John & Linda 1977 AM General 6V92 turbo Detroit 3 Speed allison, 40 ft.

Offline TomC

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Re: Power steering oil?
« Reply #8 on: December 10, 2012, 08:31:32 PM »
When I had the Sheppard steering installed on my bus, I also had the box rebuilt-and the rebuilder suggested 15W-40. It whines a bit when cold, but works well. Good Luck, TomC
Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.

Offline gus

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Re: Power steering oil?
« Reply #9 on: December 11, 2012, 01:42:59 PM »
I have a few cases of old Dexron but I use newer when necessary, Dexron says it is all backward compatible.

My Sheppard is a very old model, not even made anymore and there are no parts available. The only way to renew it is to send to the factory and have a newer model made of it. Very discouraging pricewise.

Anyway, newer Sheppard models may use different oil than mine which calls for plain ole 10w-40 motor oil as per Sheppard's tech, Roy, at rmilne@rhsheppard.com, a really helpful guy.
PD4107-152
PD4104-1274
Ash Flat, AR