Hydraulic oil

Rich'sToys · Jan 27, 2018

What is the difference between ISO 46 hydraulic oil and ISO 68? Both containers start that it is about 20 weight or equivalent. Over the years I have used both in my loader tractor--just bought whatever was available at the time. Just wondering if it really makes a difference.

Rich'sToys · Jan 27, 2018

Should have read "Both containers STATE that it is 20 weight or equivalent".
Damn, I wish we could edit on here! :evil:

VicS · Jan 27, 2018

Iso 46 is 15w. Really just non det cheap
oil. I would never use it. Good had oil is
cheaper than parts.

Adirondack case guy · Jan 27, 2018

You can edit in Classic View if you proof read.
Loren

Brendon-KS · Jan 27, 2018

Provided they are the same brand and
quality the 46 is just a bit thinner than
the 68. ISO 46 is commonly used for
hydrostats that run in cold weather - the
reduced parasitic drag helps the engine
start easier. If the oil in your system
runs hot you need to be careful that the 46
doesn't lose too much viscosity which could
cause damage. As long as your reservoir
stays around 160 F or below it is fine.
The 68 is a good all-around hydro fluid if
you don't run in extreme cold conditions.

markct · Jan 27, 2018

That's b.s., I mean there are plenty of cheap and quality iso46 oils, If your equipment calls for it and you don't use it that's just dumb

dpendzic · Jan 27, 2018

my cross reference charts show iso 46 equal to around to sae 15 engine oil and sae 75w gear oil
iso 68 equal to sae 25 engine oil and sae 80w gear oil
both have anti-foaming and water absorbing additives
ambient temperature is a consideration on what grade oil you want to use---I use iso 46 in all my machines in northern Ma.

Mike(NEOhio) · Jan 27, 2018

I just got a log splitter for Christmas that calls for ISO 32 (10 wt.) but I can't find it where I usually go.

moresmoke · Jan 27, 2018

Deere dealer should have 10 wt. The older combines use it for hydraulic fluid.

Steve@Advance · Jan 27, 2018

I would lean more toward the ISO 46. That is a more commonly called for weight in hydraulic systems than the
68.

Here is a chart that gives some comparison. Note the big difference in crankcase oil and gear oil!
Oil Viscosity Chart

Rich'sToys · Jan 27, 2018

(quoted from post at 18:19:33 01/27/18) You can edit in Classic View if you proof read.
Loren

I could have in modern also if I had caught it. I just happened to miss this one. It would just be nice to be able to fix it after the fact.

Rich'sToys · Jan 27, 2018

Thanks for all the replies. This is just a UB Minneapolis Moline with non factory hydraulics and an old single action loader, so it's not really anything too critical, I don't think. As I had mentioned, I have used both in the past and they both seemed to work. I was just wondering what the difference was. Based on the responses, I will probably stick with the 46 from now on.

CBBC · Jan 27, 2018

Mike, my splitter also called for 32. I have lots of 46 for my hitachi excavators...so i had to go searching too.I ended up getting it at hydraulic supply shop.

I think it may be better if you are splitting in the cold winter, but last summer when it was hot I had the splitter going and it didn't seem to have as much power. It's running perfectly fine last week like it did in the early spring.
When I change the oil I will probably just put 46 in... doesn't get particularly bcold here.
Grant

gears · Jan 28, 2018

Local deere said they fill their splitters with atf, so that's what I'm putting in the one I almost have finished in the shop.

D beatty · Jan 28, 2018

TSC and NAPA have 10 wt oil.

Mike(NEOhio) · Jan 29, 2018

Thanks, I think I'll go with the 46. The whole idea is to have the wood split before it gets cold, right?

Hydraulic oil

Rich'sToys

Well-known Member

Rich'sToys

Well-known Member

VicS

Well-known Member

Adirondack case guy

Well-known Member

Brendon-KS

Well-known Member

markct

Well-known Member

dpendzic

Well-known Member

Mike(NEOhio)

Well-known Member

moresmoke

Well-known Member

Steve@Advance

Well-known Member

Rich'sToys

Well-known Member

Rich'sToys

Well-known Member

CBBC

Member

gears

Member

D beatty

Well-known Member

Mike(NEOhio)

Well-known Member

Similar threads