[AT] Hydraulic oil vs. motor oil

[Will Powell]

I run the 20 wt oil in the transmission of my Allis C (recommended) and I also use it in the hydraulics of my D17. You might want to get some 5w20 motor oil for your pump? Thinner than what you run in your engine but still motor oil? Also want to avoid over filling, if crankshaft reaches oil level you will start foaming the oil and that's not good. Just keep an eye on it. 
----- Original Message ----- 
From: jahaze at aol.com 
To: at at lists.antique-tractor.com 
Sent: Monday, June 13, 2011 1:13:10 PM 
Subject: Re: [AT] Hydraulic oil vs. motor oil 


Good idea Lew, I didn't think of that. I guess it would ensure that if there were going to be any problems, this would minimize them. I've been putting off fixing it for quite some time, I always figured that the fluid was leaking out through bad cylinder seals. Then this weekend, I was starting to really go through the hyrdaulic fluid and noticed that the crank case was over full. It took me awhile, but I finally put two and two together and a little light bulb went off in my head. There must be a gasket, or seal between the pump and the engine block that's leaking. I don't know how hard it will be to fix, but I'd really like to finish moving some dirt so I can get started on my garage expansion project. Thanks to everyone for your help. 

Enjoy, Joe 






-----Original Message----- 
From: Lew Best <lew at lewslittlefarm.com> 
To: 'Antique tractor email discussion group' <at at lists.antique-tractor.com> 
Sent: Mon, Jun 13, 2011 12:41 pm 
Subject: Re: [AT] Hydraulic oil vs. motor oil 


A friend of mine has a drilling company (drills for large poles, pilings, 
tc. in the earth); his drilling trucks have hydraulic drills on them. He 
ays he just uses non-detergent oil; cheaper than hydraulic fluid & works as 
ell. Might put oil in the ps pump instead of hydraulic fluid? Years ago I 
ad an old bobcat & the dealer said I could use atf, 30 wt oil or hydraulic 
luid in it. 
Lew near Waco, TX 
-----Original Message----- 
rom: at-bounces at lists.antique-tractor.com 
mailto:at-bounces at lists.antique-tractor.com] On Behalf Of jahaze at aol.com 
ent: Monday, June 13, 2011 9:38 AM 
o: at at lists.antique-tractor.com 
ubject: [AT] Hydraulic oil vs. motor oil 

I have a leak between the power steering pump and the engine block on my 
ase 430 industrial. I have about two hours of run time left before I 
inish the project I'm working on. Will it hurt the engine if I keep using 
t knowing that the engine oil is getting contaminated by hydraulic oil? I 
an tear it all apart before I finish, but I'd really like to get this 
roject done first. 
Enjoy, Joe 

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