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CA Hydraulic/Transmission Oil
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dfwallis View Drop Down
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Joined: 09 Mar 2023
Location: DFW
Points: 879 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Topic: CA Hydraulic/Transmission Oil
    Posted: 21 hours 2 minutes ago at 12:26pm
CA recommended SAE 10W <40f, 20W >40f

I bought hydraulic fluid at NAPA, showed them a picture of the 10W20 product I wanted, paid, but they brought out a 30W product and put it in the car.  I didn't pay attention that they didn't give me what I asked for.  Anyway, the pump works well but sometimes it takes a while longer than desired to prime.  Nobody uses SAE oil ratings for hydraulic fluid any more, and it's not clear what the best ISO grade to use is:

SAE 10 weight viscosity:  45mm**2/s at 40C, 7.0mm**2/s at 100C
SAE 20 weight:  61mm**2/s at 40C, 8.5mm**2/s at 100C
ISO 32 weight:  32mm**2/s at 40C, 5.5mm**2/s at 100C
ISO 46 weight:  46mm**2/s at 40C, 7.0mm**2/s at 100C
ISO 68 weight:  68mm**2/s at 40C, 9.5mm**2/s at 100C

None of the ISO ratings match the original specs.  I don't suppose those were too precise.  I'm inclined to go with ISO46AW.  But that seems to equate more closely to a SAE 10 weight.  Hopefully, the "AW" additives will help make up for any differences.  yes/no?

Why are they rating these at 40C??? that's 104F (and 212F).
1952 CA13092
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Les Kerf View Drop Down
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Joined: 08 May 2020
Location: Idaho
Points: 1384 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 20 hours 2 minutes ago at 1:26pm
Considering the 'relatively' light work your CA will likely see in Texas, I would use the ISO 32. If you intend to cultivate cotton in 95 degree heat for 12 hours at a time then use the ISO 46.

The ISO 32 works perfectly in my somewhat cooler climate here in northern Idaho, ISO 46 is somewhat sluggish.
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Dennis J OPKs View Drop Down
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Joined: 12 Sep 2009
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Points: 549 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Dennis J OPKs Quote  Post ReplyReply Direct Link To This Post Posted: 19 hours 42 minutes ago at 1:46pm
I have used straight 30w non-detergent in KS, not zero temps and it works fine.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 22140 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 15 hours 54 minutes ago at 5:34pm
Why wouldn't one use 821XL/PermaTran/HyTran/HyGard ???  All readily available and correct everything mixed in.
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dfwallis View Drop Down
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Joined: 09 Mar 2023
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Points: 879 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Posted: 15 hours 47 minutes ago at 5:41pm
Originally posted by Dennis J OPKs Dennis J OPKs wrote:

I have used straight 30w non-detergent in KS, not zero temps and it works fine.

At some point, AC added a check valve in the inlet, presumably to improve priming.  1952 doesn't seem to have a check valve/ball.  It's a minor problem, but sometimes it can take 10-15 seconds (or longer if its cold) before it starts to pump, usually on a fresh startup.  May be a combination of wear and oil viscosity.  With thicker oil, it was nearly impossible to get it to prime.
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dfwallis View Drop Down
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Joined: 09 Mar 2023
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Points: 879 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Posted: 15 hours 44 minutes ago at 5:44pm
Originally posted by DrAllis DrAllis wrote:

Why wouldn't one use 821XL/PermaTran/HyTran/HyGard ???  All readily available and correct everything mixed in.

That's roughly what it has in it (821Xl compliant).  That's roughly 10W30 and it has trouble priming sometimes.
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dfwallis View Drop Down
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Joined: 09 Mar 2023
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Points: 879 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Posted: 15 hours 23 minutes ago at 6:05pm
Originally posted by Les Kerf Les Kerf wrote:

Considering the 'relatively' light work your CA will likely see in Texas, I would use the ISO 32. If you intend to cultivate cotton in 95 degree heat for 12 hours at a time then use the ISO 46.

The ISO 32 works perfectly in my somewhat cooler climate here in northern Idaho, ISO 46 is somewhat sluggish.

The tractor is in Indiana.  It will have a relatively easy life for the foreseeable future.  It may on occasion do some plowing/discing.  My brother is eyeing it for his garden.   It may be used for some brush hogging if I get the smaller one working, but mostly finish mowing.
1952 CA13092
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 88498 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 1 hour 37 minutes ago at 7:51am
The CA system is very very BASIC... ISO 32, 46, or 68 normally works fine.. If YOUR tractor specifically has trouble priming and you know the 46 has an easier time, then that is totally acceptable... HYTRANS type oils are also commonly used, but they can be 30wt on some brands.. some are 20wt and some are 10w30 type viscosity.. You have to watch that if you normally have trouble with 30wt oils..
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 88498 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 1 hour 36 minutes ago at 7:52am
PER GOOGLE---

Here’s a handy chart to help you find the equivalent ISO grade for a given SAE weight:
SAEISO/AW
10W32
15W or 20W46
20W68
30W100

This oil conversion chart is approximate.

Note: ISO grades overlap with SAE weights in some cases. For instance, ISO 46 can replace both SAE 15W and 20W oils depending on the temperature.



Edited by steve(ill) - 1 hour 33 minutes ago at 7:55am
Like them all, but love the "B"s.
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